Defence Aptitude Assessment (DAA) — Questions and Answers

Question 1: What is the importance of interdisciplinary knowledge in DAA technical knowledge?

It is unnecessary and distracting from core competencies
It provides broader context and enhances problem-solving through multiple perspectives (Correct answer)
It only matters for senior professionals
It replaces the need for specialized knowledge

Correct answer: It provides broader context and enhances problem-solving through multiple perspectives

Interdisciplinary knowledge enriches understanding by providing multiple perspectives, enabling more comprehensive analysis and more creative problem-solving approaches.

Question 2: FRACTIOUS means the opposite of …

Cranky
Humoured (Correct answer)
Cantankerous
Grumpy

Correct answer: Humoured

Explanation: "Fractious" means irritable or unruly, so the opposite would be someone who is easygoing or good-natured, which is captured by "Humoured." "Cantankerous," "Cranky," and "Grumpy" are all synonyms for "irritable" or "bad-tempered," not opposites.

Question 3: Two cars start from the same point and travel in opposite directions. Car A travels at 60 km/h and Car B at 80 km/h. How far apart are they after 3 hours?

540 km
360 km
420 km (Correct answer)
480 km

Correct answer: 420 km

Combined speed = 60 + 80 = 140 km/h; distance = 140 × 3 = 420 km.

Question 4: Which of the following designs for a vehicle would be the most stable and least likely to tip over while cornering?

A low center of gravity and a wide base. (Correct answer)
A high center of gravity and a narrow base.
A low center of gravity and a narrow base.
A high center of gravity and a wide base.

Correct answer: A low center of gravity and a wide base.

An object's stability is increased by having a low center of gravity and a wide base of support. A low center of gravity means the object is less likely to have its center of gravity move outside its base of support when tilted. A wide base provides a larger area for the center of gravity to remain within, preventing tipping. Racing cars, for example, are built very low and wide for this reason.

Question 5: A car completes a journey in 6 hours at 80 km/h. How long would the same journey take at 96 km/h?

4.5 hours
5 hours (Correct answer)
5.5 hours
4 hours

Correct answer: 5 hours

Distance = 6 × 80 = 480 km; time at 96 km/h = 480 ÷ 96 = 5 hours.

Question 6: ELATED is to HAPPY as DESPONDENT is to?

ANGRY
PLEASED
HOPEFUL
SAD (Correct answer)

Correct answer: SAD

This analogy relates to the degree or intensity of an emotion. To be elated is to be extremely happy. To be despondent is to be extremely sad.

Question 7: The image shows four interconnected containers of different shapes. If water is poured into the container on the far left, what will be the final water level in all four containers when the water comes to rest?

The water level will be highest in the widest container.
The water level will be the same in all four containers. (Correct answer)
The water level will be highest in the container on the far right.
The water level will be highest in the narrowest container.

Correct answer: The water level will be the same in all four containers.

This demonstrates the principle of communicating vessels. In a set of interconnected containers, a liquid at rest will balance out to the same level in all containers, regardless of their shape or volume. This is because the pressure exerted by a fluid at a given depth is constant, and the liquid will flow until the pressure is equalized across the bottom of all containers.

Question 8: Read the passage and answer the question that follows: 'Effective communication is a cornerstone of successful military operations. Orders must be conveyed with clarity and precision to avoid misinterpretation, especially in high-stress environments. The 'repeat-back' method, where the recipient of a message repeats it verbatim to the sender, is a standard procedure to ensure mutual understanding. This practice is critical in coordinating movements between different units, such as infantry and armour, where a misunderstanding of timing or location could have severe consequences.' What is the primary purpose of the 'repeat-back' method described in the passage?

To create an official record of all communications.
To test the recipient's memory under pressure.
To confirm that the message was received and understood correctly. (Correct answer)
To slow down the pace of operations.

Correct answer: To confirm that the message was received and understood correctly.

The passage explicitly states that the 'repeat-back' method 'is a standard procedure to ensure mutual understanding.' This directly supports the idea that its primary purpose is to confirm the message was received and understood correctly. The other options are not supported by the text.

Question 9: A code is valid only if it has exactly 6 digits. The code 84392 is entered. Is it valid?

Yes, if the system accepts it
No, it has only 5 digits (Correct answer)
Yes, it is valid
Validity cannot be determined

Correct answer: No, it has only 5 digits

84392 contains 5 digits, which does not meet the exactly-6-digit requirement, so it is invalid.

Question 10: In a pulley system, a load of 100N is lifted by an effort of 25N. What is the mechanical advantage of the system?

2
3
5
4 (Correct answer)

Correct answer: 4

Mechanical Advantage (MA) is calculated by dividing the Load by the Effort (MA = Load / Effort). In this case, MA = 100N / 25N = 4. This means the pulley system multiplies the applied force by four times.

Question 11: SCALPEL is to SURGEON as CHISEL is to?

SCULPTOR (Correct answer)
WOOD
STONE
HAMMER

Correct answer: SCULPTOR

The relationship is between a tool and the professional who uses it. A scalpel is the primary tool of a surgeon, just as a chisel is a primary tool for a sculptor.

Question 12: A train travels 300 km in 4 hours. What is its speed in km/h?

65 km/h
70 km/h
80 km/h
75 km/h (Correct answer)

Correct answer: 75 km/h

Speed = distance ÷ time = 300 ÷ 4 = 75 km/h.

Question 13: Sergeant Torres ranks above Corporal Singh. Corporal Singh ranks above Private Walsh. Who ranks lowest?

Corporal Singh
Sergeant Torres
They are equal
Private Walsh (Correct answer)

Correct answer: Private Walsh

Transitive reasoning: Torres > Singh > Walsh, making Private Walsh the lowest in rank.

Question 14: Two cyclists start from opposite ends of a 120 km road at the same time. Cyclist A rides at 20 km/h and Cyclist B at 25 km/h. After how long will they meet?

2 hours
2 hours 40 minutes (Correct answer)
3 hours
2 hours 20 minutes

Correct answer: 2 hours 40 minutes

Combined speed = 45 km/h; time = 120 ÷ 45 = 8/3 hours = 2 hours 40 minutes.

Question 15: 3b + 7c = 7c + therefore equals?

7c
None of these
6b
3b (Correct answer)

Correct answer: 3b

Explanation: In the given equation 3b + 7c = 7c+, we can see that the term 7c is present on both sides. By subtracting 7c from both sides of the equation, it cancels out, leaving 3b = on one side. Therefore, the equation simplifies to 3b =, indicating that 3b is the result.

Question 16: Based on the passage, what was the original primary purpose of the Global Positioning System?

Providing accurate time signals
Civilian in-car navigation
Commercial logistics tracking
A navigation system for military forces (Correct answer)

Correct answer: A navigation system for military forces

The first sentence explicitly states, 'The Global Positioning System (GPS) was originally developed by the United States Department of Defense for military use.' This clearly identifies its initial purpose.

Question 17: FISH is to SCHOOL as WOLF is to?

FLOCK
PACK (Correct answer)
HERD
COLONY

Correct answer: PACK

This is an analogy of collective nouns. A group of fish is called a school, and a group of wolves is called a pack.

Question 18: LOZENGE is to MEDICINE as LETTER is to …

Paragraph
Word (Correct answer)
Passage
Sentence

Correct answer: Word

Explanation: The relationship between "lozenge" and "medicine" is that a lozenge is a specific type of medicine, just as a letter is a specific unit of written communication. A paragraph, sentence, and passage are all larger units of written text and do not represent the same relationship as "lozenge" to "medicine."

Question 19: Read the following scenario and answer the question: 'During a navigation exercise, trainees are given a map, a compass, and a set of coordinates. The instructions state: 'Proceed to Checkpoint Alpha. From there, travel 2km on a bearing of 090 degrees to reach Checkpoint Bravo. Any deviation from the specified bearing is to be avoided to conserve time.' Trainee Jones successfully reaches Checkpoint Alpha. However, he misreads his compass and travels 2km on a bearing of 190 degrees.' Based on the passage, what is the most likely outcome for Trainee Jones?

He will fail to reach Checkpoint Bravo. (Correct answer)
He will be following the instructions correctly.
He will find a shorter route to Checkpoint Bravo.
He will reach Checkpoint Bravo ahead of schedule.

Correct answer: He will fail to reach Checkpoint Bravo.

The instructions required Trainee Jones to travel on a bearing of 090 degrees to reach Checkpoint Bravo. By traveling on a bearing of 190 degrees, he is going in a significantly different direction. Therefore, it is most likely he will not reach the intended checkpoint.

Question 20: A soldier earns $3,200 per month. After a 15% tax deduction, what is their take-home pay?

$2,680
$2,560
$2,840
$2,720 (Correct answer)

Correct answer: $2,720

15% of $3,200 = $480; $3,200 − $480 = $2,720.

Question 21: A military unit's total weekly fuel consumption of 3,000 litres is allocated as shown in the pie chart below. [A pie chart would be displayed with the following allocations: Patrol Vehicles=45%, Transport Trucks=30%, Generators=15%, Helicopters=10%] If the fuel allocation for Generators is reduced by 20%, how many litres of fuel will be allocated to Generators next week?

400 litres
360 litres (Correct answer)
450 litres
90 litres

Correct answer: 360 litres

First, calculate the current fuel allocation for Generators: 15% of 3,000 litres = 0.15 * 3000 = 450 litres. Next, calculate the 20% reduction: 20% of 450 litres = 0.20 * 450 = 90 litres. Finally, subtract the reduction from the original allocation: 450 - 90 = 360 litres.

Question 22: A man rows downstream at 12 km/h and upstream at 6 km/h. What is the speed of the current?

2 km/h
6 km/h
4 km/h
3 km/h (Correct answer)

Correct answer: 3 km/h

Current speed = (downstream − upstream) ÷ 2 = (12 − 6) ÷ 2 = 3 km/h.

Question 23: A cyclist rides at 15 km/h. How far will she travel in 2.5 hours?

37.5 km (Correct answer)
40 km
30 km
35 km

Correct answer: 37.5 km

Distance = speed × time = 15 × 2.5 = 37.5 km.

Question 24: If no snipers are recruits and all recruits wear red berets, which statement must be true?

Some snipers wear red berets
No snipers wear red berets
All snipers wear red berets
None of the above (Correct answer)

Correct answer: None of the above

Recruits wear red berets, but since no snipers are recruits, we cannot determine whether snipers wear red berets or not — it is not necessarily true that no sniper wears one.

Question 25: The first figure is a large circle with one small black dot inside. The second figure is a large circle with two small black dots. The third is a large circle with three small black dots. What is the next figure?

A large circle with five small black dots
A large circle with one small black dot
A large circle with four small black dots (Correct answer)
A large square with four small black dots

Correct answer: A large circle with four small black dots

This is a simple addition pattern. Each figure in the series adds one small black dot inside the large circle. Following this rule, the fourth figure must contain four small black dots.

Question 26: Unit X deploys on odd-numbered days. Today is the 14th. Does Unit X deploy?

Yes
No (Correct answer)
Cannot be determined
Only if ordered

Correct answer: No

14 is an even number, so the odd-day deployment rule does not apply today.

Question 27: The line graph below shows the number of personnel deployed from two different bases, Base X and Base Y, over 6 months. [A line graph would show two lines. Base X (Blue): Jan=200, Feb=220, Mar=250, Apr=230, May=280, Jun=300. Base Y (Red): Jan=210, Feb=230, Mar=240, Apr=260, May=270, Jun=280] In which month was the absolute difference in personnel deployed between Base X and Base Y the greatest?

March
June
April (Correct answer)
May

Correct answer: April

Calculate the absolute difference between Base X and Base Y for each month: - Jan: |200 - 210| = 10 - Feb: |220 - 230| = 10 - Mar: |250 - 240| = 10 - Apr: |230 - 260| = 30 - May: |280 - 270| = 10 - Jun: |300 - 280| = 20 The greatest difference was 30, which occurred in April.

Question 28: If a distance of 250 nautical miles is shown on a chart by a 5cm long line, then 1cm represents:

50 nautical miles (Correct answer)
25 nautical miles
75 nautical miles
100 nautical miles

Correct answer: 50 nautical miles

Explanation: If a 5 cm long line on the chart represents 250 nautical miles, then to find out how many nautical miles are represented by 1 cm, we divide 250 by 5, which equals 50. So, 1 cm represents 50 nautical miles.

Question 29: Which word is an antonym for TACITURN?

Silent
Shy
Loquacious (Correct answer)
Reserved

Correct answer: Loquacious

'Taciturn' describes a person who is reserved or uncommunicative in speech; saying little. The opposite would be someone who is talkative. 'Loquacious' means tending to talk a great deal; talkative.

Question 30: A base has 360 personnel. One-third are on leave. How many remain on base?

120
240 (Correct answer)
180
270

Correct answer: 240

One-third of 360 = 120 are on leave, so 360 − 120 = 240 remain.

Question 31: DISORDER means the same as …

Unrest (Correct answer)
Composed
Serene
Calm

Correct answer: Unrest

Explanation: Disorder refers to a state of unrest or lack of order. It implies chaos or confusion rather than calmness, serenity, or composure. Disorder is the opposite of calm, serene, and composed, indicating a lack of order or disturbance.

Question 32: A unit has 48 soldiers split equally into 6 squads. How many soldiers are in each squad?

6
8 (Correct answer)
9
7

Correct answer: 8

48 ÷ 6 = 8 soldiers per squad.

Question 33: A soldier runs 3.5 miles on Monday and 4.25 miles on Tuesday. How many miles did they run in total?

7.75 miles (Correct answer)
7.50 miles
8.00 miles
7.25 miles

Correct answer: 7.75 miles

3.5 + 4.25 = 7.75 miles.

Question 34: In the gear system shown, Gear A has 10 teeth and turns clockwise. Gear B has 20 teeth, and Gear C has 5 teeth. Which of the following statements is true?

Gear C will turn clockwise and faster than Gear A. (Correct answer)
Gear C will turn anti-clockwise and faster than Gear A.
Gear C will turn anti-clockwise and slower than Gear A.
Gear C will turn clockwise and at the same speed as Gear A.

Correct answer: Gear C will turn clockwise and faster than Gear A.

When two gears mesh, they turn in opposite directions. Since Gear A turns clockwise, Gear B will turn anti-clockwise. Since Gear B turns anti-clockwise, Gear C will turn clockwise. Regarding speed, a smaller gear will always turn faster than a larger gear it is meshed with. Gear C has the fewest teeth (5), so it will rotate the fastest. Gear A has 10 teeth, so Gear C will turn faster than Gear A.

Question 35: A fishing rod, when casting a line, functions as which class of lever?

Class 2 Lever
Class 3 Lever (Correct answer)
Class 1 Lever
Not a lever

Correct answer: Class 3 Lever

A Class 3 lever has the effort applied between the fulcrum and the load. When casting a fishing rod, one hand acts as the fulcrum at the end of the rod, the other hand applies the effort in the middle, and the load is the weight of the line and lure at the tip.

Question 36: A vehicle travels 120 km in 2 hours. What is its average speed?

40 km/h
100 km/h
80 km/h
60 km/h (Correct answer)

Correct answer: 60 km/h

Average speed = distance ÷ time = 120 ÷ 2 = 60 km/h.

Question 37: A car travels the first half of a journey at 60 km/h and the second half at 90 km/h. What is the average speed for the entire journey?

75 km/h
72 km/h (Correct answer)
70 km/h
74 km/h

Correct answer: 72 km/h

Average speed = 2 × 60 × 90 ÷ (60 + 90) = 10800 ÷ 150 = 72 km/h.

Question 38: Two gears are meshed. Gear A has 60 teeth and Gear B has 20 teeth. For every one full rotation of Gear A, how many rotations does Gear B complete?

One-third
Sixty
One
Three (Correct answer)

Correct answer: Three

The gear ratio is 60:20, which simplifies to 3:1. This means that for every one rotation of the larger gear (A), the smaller gear (B) must complete three rotations to make all 60 teeth of gear A pass by.

Question 39: Either the convoy travels by road or by air. It does not travel by air. What follows?

Nothing can be determined
The convoy does not move
The convoy travels by sea
The convoy travels by road (Correct answer)

Correct answer: The convoy travels by road

This is a disjunctive syllogism: when one of two options is eliminated, the other must be true.

Question 40: What is the primary purpose of a rack and pinion gear system?

To convert rotational motion to linear motion (Correct answer)
To change the direction of rotation
To disengage the drive shaft
To increase torque significantly

Correct answer: To convert rotational motion to linear motion

A rack and pinion system is used to convert rotational motion into linear motion, or vice versa. The pinion is a circular gear that engages with the teeth on the rack, which is a linear gear bar. This mechanism is commonly found in vehicle steering systems.

Question 41: A squadron has four types of aircraft with different operational ranges and fuel capacities as shown below. | Aircraft Type | Range (km) | Fuel Capacity (litres) | |---------------|------------|------------------------| | Typhoon FGR4 | 2,900 | 5,000 | | Hercules C-130| 3,800 | 20,000 | | Voyager KC2 | 11,100 | 90,000 | | Atlas C.1 | 5,600 | 50,000 | Assuming fuel consumption is constant, which aircraft has the highest fuel efficiency in terms of kilometres per litre (km/l)?

Typhoon FGR4 (Correct answer)
Voyager KC2
Hercules C-130
Atlas C.1

Correct answer: Typhoon FGR4

To find the fuel efficiency, divide the range by the fuel capacity for each aircraft: - Typhoon FGR4: 2,900 km / 5,000 l = 0.58 km/l - Hercules C-130: 3,800 km / 20,000 l = 0.19 km/l - Voyager KC2: 11,100 km / 90,000 l = 0.123 km/l - Atlas C.1: 5,600 km / 50,000 l = 0.112 km/l The Typhoon FGR4 has the highest value (0.58 km/l), making it the most fuel-efficient in this context.

Question 42: A car travels at 90 km/h. How long will it take to travel 225 km?

3.5 hours
2.5 hours (Correct answer)
3 hours
2 hours

Correct answer: 2.5 hours

Time = distance ÷ speed = 225 ÷ 90 = 2.5 hours.

Question 43: A driver gear has 10 teeth and the driven gear has 40 teeth. What is the gear ratio?

1:1
4:1 (Correct answer)
10:40
1:4

Correct answer: 4:1

The gear ratio is calculated as the number of teeth on the driven gear divided by the number of teeth on the driver gear. In this case, it is 40 / 10 = 4. This is expressed as a ratio of 4:1.

Question 44: What is the primary purpose of technical knowledge in DAA - Defence Aptitude Assessment?

To replace all other assessment methods
To generate revenue for testing organizations
To limit the number of qualified professionals
To assess competency in technical knowledge concepts and application (Correct answer)

Correct answer: To assess competency in technical knowledge concepts and application

Technical Knowledge assessment evaluates understanding and application of core concepts, ensuring candidates meet established competency standards.

Question 45: The functionality of the entire GPS system is dependent on what?

Ground-based radio towers
The removal of Selective Availability
A network of orbiting satellites (Correct answer)
Smartphone mapping applications

Correct answer: A network of orbiting satellites

The passage states, 'The system relies on a constellation of satellites orbiting the Earth, each transmitting precise time signals.' This shows that the satellites are the core component upon which the system depends.

Question 46: If a small gear drives a large gear, what is the effect on the output speed and torque of the large gear?

Speed decreases, torque increases (Correct answer)
Speed and torque both increase
Speed and torque both decrease
Speed increases, torque decreases

Correct answer: Speed decreases, torque increases

When a small gear (high speed, low torque) drives a large gear, the large gear will rotate more slowly but with greater torque. This setup is used to decrease speed and increase turning force.

Question 47: If 5 vehicles can transport 60 soldiers, how many soldiers can 8 vehicles transport?

100
80
88
96 (Correct answer)

Correct answer: 96

Each vehicle carries 60 ÷ 5 = 12 soldiers; 8 × 12 = 96 soldiers.

Question 48: If fewer than 10 troops are available, a patrol is cancelled. There are 9 troops available. What happens?

The patrol proceeds
The patrol is delayed
The patrol is cancelled (Correct answer)
More troops are requested

Correct answer: The patrol is cancelled

9 is fewer than 10, so the cancellation condition is met and the patrol is cancelled.

Question 49: Four pulley systems are lifting an identical weight. System A has one fixed pulley. System B has one fixed and one movable pulley. System C has two fixed and two movable pulleys. System D has three fixed pulleys. Assuming the pulleys and ropes are weightless and frictionless, which system requires the least amount of effort to lift the weight?

System C (Correct answer)
System B
System A
System D

Correct answer: System C

The mechanical advantage of a pulley system is determined by the number of rope segments supporting the load. System A (one fixed pulley) has a mechanical advantage of 1. System B (one fixed, one movable) has 2 supporting ropes, giving a mechanical advantage of 2. System C (two fixed, two movable) has 4 supporting ropes, giving a mechanical advantage of 4. System D (three fixed pulleys) only changes the direction of the force and has a mechanical advantage of 1. System C requires the least effort because it has the highest mechanical advantage.

Question 50: When did a significant boom in commercial and personal GPS applications occur?

Immediately after the project was codenamed NAVSTAR
After the year 2000 (Correct answer)
During the 1970s
In the 1980s

Correct answer: After the year 2000

The text explains that 'Selective Availability' was removed in 2000, 'leading to a boom in commercial and personal GPS applications'. This indicates the growth happened after this policy change.

Question 51: OREGANO is to HERB as TURMERIC is to ...

Pepper
Vegetable
Spice (Correct answer)
Cayenne

Correct answer: Spice

Explanation: The relationship between "oregano" and "herb" is that oregano is a specific type of herb, just as turmeric is a specific type of spice. Pepper and cayenne are also types of spices, but they do not represent the same relationship as "oregano" to "herb." "Vegetable" is not the correct answer as turmeric is not a vegetable but a spice.

Question 52: The term 'Selective Availability' refers to which of the following?

The system being available only in specific countries
The high cost of commercial GPS receivers
Intentionally reduced accuracy for civilian users (Correct answer)
The system only being available at certain times of day

Correct answer: Intentionally reduced accuracy for civilian users

The passage defines this term directly: '...the U.S. government made the system available for civilian use in the 1980s, albeit with intentionally degraded accuracy known as 'Selective Availability'.' It was a deliberate reduction in precision for non-military users.

Question 53: A reconnaissance plane flies from base to a target at 600 km/h and returns at 400 km/h. What is the average speed for the round trip?

520 km/h
500 km/h
480 km/h (Correct answer)
490 km/h

Correct answer: 480 km/h

Average speed = 2 × 600 × 400 ÷ (600 + 400) = 480000 ÷ 1000 = 480 km/h.

Question 54: Intelligence report A says the bridge is intact; report B says it is destroyed. Both cannot be correct. What is the logical status?

Both are true
Both are false
One must be true and the other false
At least one is false (Correct answer)

Correct answer: At least one is false

Two contradictory statements cannot both be true; at least one of them must be false.

Question 55: 20% of 60 equals?

20
None of these
15
12 (Correct answer)

Correct answer: 12

Explanation: To find 20% of a number, you multiply the number by 0.20 or simply move the decimal point two places to the left. Therefore, 20% × 60 = 0.20 × 60 = 12. So, 20% of 60 is 12.

Question 56: ODOMETER is to DISTANCE as COMPASS is to?

SPEED
NEEDLE
HIKING
DIRECTION (Correct answer)

Correct answer: DIRECTION

An odometer is an instrument used to measure distance. A compass is an instrument used to determine direction.

Question 57: The table below shows the results of a fitness test for 1,200 recruits, categorized by age group and test outcome. | Age Group | Pass | Fail | Total | |-----------|------|------|-------| | 18-21 | 450 | 50 | 500 | | 22-25 | 360 | 40 | 400 | | 26-30 | 270 | 30 | 300 | | Total | 1080 | 120 | 1200 | Which of the following statements is true based on the data?

Exactly 10% of all recruits failed the test. (Correct answer)
The 18-21 age group had the lowest pass rate.
The 22-25 age group had a pass rate of 85%.
More than half of the recruits who passed were in the 18-21 age group.

Correct answer: Exactly 10% of all recruits failed the test.

Let's evaluate each statement: A) Pass rates: 18-21 is 450/500=90%; 22-25 is 360/400=90%; 26-30 is 270/300=90%. All are equal, so A is false. B) The 22-25 pass rate is 360/400 = 90%, so B is false. C) Total fails are 120. Total recruits are 1200. (120/1200) * 100 = 10%. This statement is true. D) Total who passed is 1080. Half of this is 540. The 18-21 group had 450 passes, which is less than half. So D is false.

Question 58: A wheelbarrow is an example of which class of lever?

Class 1 Lever
It is not a lever
Class 2 Lever (Correct answer)
Class 3 Lever

Correct answer: Class 2 Lever

A Class 2 lever has the load positioned between the fulcrum and the effort. In a wheelbarrow, the wheel's axle is the fulcrum, the load is in the basin, and the effort is applied at the handles.

Question 59: A military vehicle travels at 80 km/h for 2 hours, then at 60 km/h for 3 hours. What is the total distance covered?

340 km (Correct answer)
260 km
300 km
320 km

Correct answer: 340 km

First leg: 80 × 2 = 160 km; second leg: 60 × 3 = 180 km; total = 340 km.

Question 60: A rectangular barracks floor is 15 m long and 8 m wide. What is its area?

110 m²
120 m² (Correct answer)
100 m²
130 m²

Correct answer: 120 m²

Area = length × width = 15 × 8 = 120 m².

Question 61: In a gear train, Gear A (driver) turns clockwise. It meshes with Gear B, which in turn meshes with Gear C. What direction does Gear C turn?

It depends on the gear size
Clockwise (Correct answer)
It will not turn
Counter-clockwise

Correct answer: Clockwise

Gear A (clockwise) turns Gear B (counter-clockwise). Gear B (counter-clockwise) then turns Gear C (clockwise). Gear B is an 'idler' gear, and its effect is to make the final gear (C) turn in the same direction as the first gear (A).

Question 62: Which of these boxes will hold the largest number of 1cm cubes?

Sides 6cm, 4cm, 2cm
Sides 8cm, 4cm, 2cm
Sides 10cm, 4cm, 2 cm
Sides 6cm, 4cm, 4cm (Correct answer)

Correct answer: Sides 6cm, 4cm, 4cm

Explanation: To find out which box will hold the largest number of 1cm cubes, we calculate the volume of each box. The box with sides 6cm, 4cm, and 4cm will hold the largest number of 1cm cubes, as it has the greatest volume of 96 cm³.

Question 63: What is the ideal mechanical advantage of a pulley system with 3 movable pulleys and 1 fixed pulley, where the rope is attached to the fixed support?

7
3
6 (Correct answer)
4

Correct answer: 6

The ideal mechanical advantage (IMA) of a pulley system is typically equal to the number of rope segments directly supporting the load. In a standard block and tackle arrangement, this is equal to the number of pulleys in the system, but more accurately, it's the number of supporting strands. With 3 movable pulleys, there will be 6 supporting strands, giving an IMA of 6.

Question 64: Which word is an antonym for ESOTERIC?

Profound
Manifest (Correct answer)
Complex
Obscure

Correct answer: Manifest

'Esoteric' means intended for or likely to be understood by only a small number of people with a specialized knowledge or interest. The opposite is something that is common or generally known. 'Manifest' means clear or obvious to the eye or mind, making it a suitable antonym.

Question 65: No restricted areas are open to recruits. Zone 7 is a restricted area. Which must be true?

Zone 7 may be open to recruits
Some recruits can enter Zone 7
Zone 7 is not open to recruits (Correct answer)
Zone 7 is open to recruits

Correct answer: Zone 7 is not open to recruits

Since no restricted areas are open to recruits and Zone 7 is restricted, Zone 7 is not open to recruits.

Question 66: Five soldiers line up by height tallest to shortest: A, B, C, D, E. Who is the median height?

D
B
A
C (Correct answer)

Correct answer: C

With five people ranked 1–5, the middle (median) position is the third, which is C.

Question 67: BOTANY is to PLANTS as ORNITHOLOGY is to?

ANIMALS
ROCKS
BIRDS (Correct answer)
INSECTS

Correct answer: BIRDS

The relationship is the field of study to its subject. Botany is the scientific study of plants, and ornithology is the scientific study of birds.

Question 68: Which word is a synonym for CANDID?

Vague
Frank (Correct answer)
Polite
Secretive

Correct answer: Frank

'Candid' means truthful and straightforward. 'Frank' also means open, honest, and direct in speech or writing. The other options are incorrect: 'Secretive' is an antonym, 'Vague' means unclear, and 'Polite' relates to manners, not necessarily honesty.

Question 69: A person walks 3 km in 45 minutes. What is their speed in km/h?

3 km/h
5 km/h
4.5 km/h
4 km/h (Correct answer)

Correct answer: 4 km/h

Convert 45 minutes to 0.75 hours; speed = 3 ÷ 0.75 = 4 km/h.

Question 70: Two soldiers can guard 4 posts. How many soldiers are needed to guard 10 posts using the same ratio?

6
5 (Correct answer)
4
8

Correct answer: 5

The ratio is 1 soldier per 2 posts; 10 posts require 5 soldiers.

Question 71: How are technical knowledge standards typically updated in DAA?

Through periodic review by expert panels incorporating new research and best practices (Correct answer)
Only when government legislation requires changes
Standards never change once established
By popular vote among all practitioners

Correct answer: Through periodic review by expert panels incorporating new research and best practices

Professional standards are periodically reviewed and updated by expert panels who incorporate new research findings, technological advances, and evolving best practices.

Question 72: Two trains 80 m and 120 m long approach each other at 54 km/h and 36 km/h respectively. How long does it take them to completely pass each other?

7 seconds
8 seconds (Correct answer)
6 seconds
10 seconds

Correct answer: 8 seconds

Combined speed = 90 km/h = 25 m/s; total length = 200 m; time = 200 ÷ 25 = 8 seconds.

Question 73: The following table shows the number of applications received for four different roles at a military recruitment centre over a five-month period. | Month | Officer Cadet | Technician | Logistics | Infantry | |-----------|---------------|------------|-----------|----------| | January | 150 | 220 | 180 | 350 | | February | 165 | 210 | 190 | 360 | | March | 180 | 240 | 210 | 330 | | April | 170 | 250 | 200 | 310 | | May | 190 | 260 | 220 | 290 | What was the approximate percentage increase in applications for the Officer Cadet role from January to May?

20.5%
22.4%
26.7% (Correct answer)
30.1%

Correct answer: 26.7%

To calculate the percentage increase, use the formula: ((New Value - Original Value) / Original Value) * 100. For Officer Cadet applications, the Original Value (January) is 150 and the New Value (May) is 190. The calculation is: ((190 - 150) / 150) * 100 = (40 / 150) * 100 = 26.66...%. This is approximately 26.7%.

Question 74: A test has 40 questions. A candidate answers 32 correctly. What is their percentage score?

85%
80% (Correct answer)
75%
70%

Correct answer: 80%

32 ÷ 40 × 100 = 80%.

Question 75: A cyclist leaves town at 8:00 AM at 12 km/h. A car leaves the same town at 9:00 AM in the same direction at 48 km/h. At what time does the car overtake the cyclist?

9:30 AM
9:10 AM
9:20 AM (Correct answer)
9:15 AM

Correct answer: 9:20 AM

At 9:00 AM the cyclist has a 12 km lead; closing speed = 36 km/h; 12 ÷ 36 = 1/3 hr = 20 min, so 9:20 AM.

Question 76: A driver gear with 50 teeth rotates at 100 RPM. It drives a gear with 25 teeth. What is the rotational speed of the smaller gear?

50 RPM
400 RPM
200 RPM (Correct answer)
100 RPM

Correct answer: 200 RPM

The speeds are inversely proportional to the number of teeth. The ratio is 50:25 or 2:1. This means the smaller gear will turn twice as fast as the larger gear. Speed of small gear = 100 RPM * (50 / 25) = 100 * 2 = 200 RPM.

Question 77: TIMID is to BRAVE as FRUGAL is to?

THRIFTY
EXTRAVAGANT (Correct answer)
POOR
WEALTHY

Correct answer: EXTRAVAGANT

The words in the first pair are antonyms (opposites). Timid is the opposite of brave. Frugal, meaning saving or sparing, is the opposite of extravagant, which means spending excessively.

Question 78: What is the ideal mechanical advantage (IMA) of a single fixed pulley?

1 (Correct answer)
2
0
It depends on the load

Correct answer: 1

A single fixed pulley does not multiply the force applied; it only changes the direction of the force. Therefore, the effort required to lift the load is equal to the weight of the load, giving it a mechanical advantage of 1.

Question 79: A train 200 m long passes a stationary pole in 10 seconds. What is the speed of the train in km/h?

80 km/h
60 km/h
72 km/h (Correct answer)
54 km/h

Correct answer: 72 km/h

Speed = 200 ÷ 10 = 20 m/s; converting: 20 × 3.6 = 72 km/h.

Question 80: Three teams — Alpha, Bravo, Charlie — finish a race. Alpha beats Bravo; Bravo beats Charlie. What is the finishing order?

Alpha, Bravo, Charlie (Correct answer)
Alpha, Charlie, Bravo
Charlie, Bravo, Alpha
Bravo, Alpha, Charlie

Correct answer: Alpha, Bravo, Charlie

Alpha > Bravo > Charlie by transitivity, giving first, second, and third place respectively.

Question 81: All armored vehicles are heavy. Some heavy vehicles require special bridges. Which must be true?

No armored vehicles require special bridges
All heavy vehicles are armored
Some armored vehicles may require special bridges (Correct answer)
All armored vehicles require special bridges

Correct answer: Some armored vehicles may require special bridges

Since some heavy vehicles require special bridges and all armored vehicles are heavy, it is possible — but not certain — that some armored vehicles fall into that subset.

Question 82: CHAPTER is to BOOK as ROOM is to?

DOOR
CEILING
HOUSE (Correct answer)
HOTEL

Correct answer: HOUSE

A chapter is a distinct part of a whole book. Similarly, a room is a distinct part of a whole house.

Question 83: To lift a 200kg box using a lever, you apply force 4 metres from the fulcrum. The box is 1 metre from the fulcrum. How much effort (force) is required? (Assume g = 10 m/s²)

500N (Correct answer)
800N
400N
200N

Correct answer: 500N

First, calculate the load force: 200kg * 10 m/s² = 2000N. The principle of moments states Effort × Effort Arm = Load × Load Arm. So, Effort × 4m = 2000N × 1m. Effort = 2000 / 4 = 500N.

Question 84: A sequence of arrows is shown. The first arrow points up. The second arrow points 45 degrees clockwise (to the top-right). The third arrow points 90 degrees clockwise (to the right). What is the next arrow in the sequence?

An arrow pointing left
An arrow pointing to the bottom-right (Correct answer)
An arrow pointing up
An arrow pointing down

Correct answer: An arrow pointing to the bottom-right

The arrow is rotating 45 degrees clockwise with each step. From pointing right (90 degrees), another 45-degree rotation will have it pointing to the bottom-right (135 degrees).

Question 85: A mission requires at least 4 personnel. There are 3 available. What is the outcome?

The mission cannot proceed (Correct answer)
The mission proceeds at reduced capacity
The mission proceeds with 3
The minimum is waived

Correct answer: The mission cannot proceed

The requirement of at least 4 is not met with only 3 personnel, so the mission cannot proceed.

Question 86: Equipment costs $4,500 and is discounted by 20%. What is the final price?

$3,200
$3,400
$3,600 (Correct answer)
$3,800

Correct answer: $3,600

20% of $4,500 = $900; $4,500 − $900 = $3,600.

Question 87: A boat's speed in still water is 15 km/h and the river current flows at 3 km/h. How long will it take the boat to travel 108 km downstream?

6 hours (Correct answer)
5 hours
8 hours
7 hours

Correct answer: 6 hours

Downstream speed = 15 + 3 = 18 km/h; time = 108 ÷ 18 = 6 hours.

Question 88: If fuel costs $2.40 per liter and a vehicle uses 35 liters, what is the total fuel cost?

$86.00
$82.00
$84.00 (Correct answer)
$74.00

Correct answer: $84.00

2.40 × 35 = $84.00.

Question 89: The first figure is a white square. The second figure is a black square. The third figure is a white square. What is the next figure in the sequence?

A white circle
A black square (Correct answer)
A white square
A grey square

Correct answer: A black square

The pattern is an alternation of color. The sequence goes white, black, white. The next logical step is for the color to switch back to black.

Question 90: A seesaw is a classic example of which class of lever?

Compound Lever
Class 3 Lever
Class 1 Lever (Correct answer)
Class 2 Lever

Correct answer: Class 1 Lever

A Class 1 lever has the fulcrum (pivot point) positioned between the effort and the load. On a seesaw, the pivot is in the middle, with the effort (person pushing down) on one side and the load (person on the other side) on the other.

Question 91: A sequence shows a vertical line. The first figure has one horizontal line crossing it at the top. The second has two horizontal lines crossing it (top and middle). The third has three horizontal lines (top, middle, and bottom). What is the next figure?

A vertical line with two horizontal lines
A vertical line with one horizontal line at the bottom
A horizontal line with four vertical lines
A vertical line with four horizontal lines (Correct answer)

Correct answer: A vertical line with four horizontal lines

The pattern involves adding one horizontal line to the vertical line at each step, moving from top to bottom. Since the third figure has three lines, the question implies a different rule. Let's re-evaluate. The number of horizontal lines increases by one each time. 1, 2, 3. The next must have 4. A common pattern would be to add a fourth line.

Question 92: If a soldier passes the fitness test, they advance. Private Lee did not advance. What can be inferred?

Nothing can be inferred
Private Lee failed the fitness test (Correct answer)
Private Lee passed but was held back
Private Lee did not take the test

Correct answer: Private Lee failed the fitness test

By contrapositive: if a soldier did not advance, they did not pass the fitness test.

Question 93: Out of 200 applicants, 25% passed the initial screening. How many passed?

55
40
50 (Correct answer)
45

Correct answer: 50

25% of 200 = 0.25 × 200 = 50 applicants.

Question 94: CARROT is to VEGETABLE as BUS is to …

Vehicle (Correct answer)
Coach
Motorbike
Truck

Correct answer: Vehicle

Explanation: The relationship between "carrot" and "vegetable" is that a carrot is a specific type of vegetable. Likewise, a bus is a specific type of vehicle, making "Vehicle" the correct analogy. The other options (coach, truck, motorbike) are all specific types of vehicles but do not represent the same relationship as "carrot" to "vegetable."

Question 95: If the alarm sounds, all personnel must evacuate. The alarm has not sounded. What follows?

Evacuation is mandatory at all times
Personnel must evacuate anyway
Personnel are not required to evacuate (Correct answer)
Personnel should prepare to evacuate

Correct answer: Personnel are not required to evacuate

The evacuation requirement is triggered only by the alarm; without it sounding, the requirement does not apply.

Question 96: Which approach best supports preparation for technical knowledge in DAA?

Systematic study of core concepts combined with practice problems (Correct answer)
Only reviewing materials the day before the test
Memorizing answers without understanding concepts
Skipping foundational topics and focusing only on advanced material

Correct answer: Systematic study of core concepts combined with practice problems

Effective preparation requires systematic study of fundamental concepts reinforced with practice problems that build understanding and application skills.

Question 97: A supply run occurs every third day starting on day 1. On which days does it occur in the first 10 days?

1, 2, 3
3, 6, 9
1, 4, 7, 10 (Correct answer)
1, 3, 6, 9

Correct answer: 1, 4, 7, 10

Starting on day 1 and adding 3 each time gives days 1, 4, 7, and 10.

Question 98: Two pendulums are set to swing. Pendulum A has a string length of 1 metre and a mass of 10kg. Pendulum B has a string length of 2 metres and a mass of 5kg. Which pendulum will have the shorter period (i.e., swing back and forth more quickly)?

Pendulum A, because it is shorter. (Correct answer)
They will have the same period.
Pendulum B, because it is lighter.
Pendulum A, because it is heavier.

Correct answer: Pendulum A, because it is shorter.

The period of a simple pendulum is determined primarily by its length and the acceleration due to gravity, not its mass. A shorter pendulum will have a shorter period, meaning it will swing back and forth more quickly than a longer pendulum. The mass of the bob has no significant effect on the period.

Question 99: According to the text, what is the minimum number of satellites a receiver needs to receive signals from to determine its location?

One
Four (Correct answer)
Three
Twenty-four

Correct answer: Four

The passage states, 'A receiver on the ground can determine its exact location by calculating the time difference between receiving signals from at least four different satellites.' This specifies the minimum requirement.

Question 100: A unit deploys only when conditions A and B are both met. Condition A is met. What happens?

Condition B is automatically met
The unit deploys at half strength
The unit deploys
The unit does not deploy unless B is also met (Correct answer)

Correct answer: The unit does not deploy unless B is also met

Both A and B must be satisfied; meeting only A is insufficient for deployment.

Question 101: 1 kilogram = 1000 grams. How many grams are there in 0.7 kilograms?

None of these
700 (Correct answer)
750
70

Correct answer: 700

Explanation: To find out how many grams are there in 0.7 kilograms, we can use the conversion factor: 1 kilogram = 1000 grams. So, to convert 0.7 kilograms to grams, we multiply 0.7 by 1000: 0.7 kilograms × 1000 grams/kilogram = 700 grams

Question 102: Read the following passage and answer the question below: 'Military readiness is contingent upon a multitude of factors, including robust training programmes, advanced equipment, and the physical and mental well-being of service personnel. A key component of this is logistical support, which ensures that troops have the necessary supplies, from ammunition to rations, precisely when and where they are needed. Without a highly efficient logistical chain, even the best-equipped and best-trained forces can be rendered ineffective. Therefore, significant investment in logistics is not merely a background necessity but a strategic priority for modern armed forces.' Based on the passage, which of the following is the most accurate statement?

Advanced equipment is the single most important factor in military readiness.
Military training programmes are independent of the logistical chain.
Logistical support is considered a strategic priority for modern military forces. (Correct answer)
The well-being of service personnel is less important than logistical support.

Correct answer: Logistical support is considered a strategic priority for modern military forces.

The passage explicitly states that 'significant investment in logistics is not merely a background necessity but a strategic priority for modern armed forces.' The other options are either contradicted or not supported by the text. The passage lists equipment as one of several factors, not the most important. It doesn't compare the importance of personnel well-being to logistics, and implies training would be ineffective without logistical support.

Question 103: All officers complete basic training. James is an officer. What can be concluded?

James may skip basic training
James is exempt from training
Nothing can be concluded
James has completed basic training (Correct answer)

Correct answer: James has completed basic training

Since all officers complete basic training and James is an officer, it logically follows that James has completed basic training.

Question 104: A person is using a crowbar to lift a heavy crate. To get the maximum mechanical advantage and make the lift as easy as possible, where should the fulcrum be placed?

It does not matter where the fulcrum is placed.
Exactly in the middle of the crowbar.
As close as possible to the person's hands.
As close as possible to the crate. (Correct answer)

Correct answer: As close as possible to the crate.

A lever provides the greatest mechanical advantage when the distance from the effort (the person's hands) to the fulcrum is maximized, and the distance from the fulcrum to the load (the crate) is minimized. By placing the fulcrum as close as possible to the crate, the person increases the length of the effort arm, requiring less force to lift the heavy load.

Question 105: STREAM is to RIVER as DINGHY is to …

Frigate
Yacht (Correct answer)
Speedboat
Canoe

Correct answer: Yacht

Explanation: The relationship between "stream" and "river" is that a stream is a smaller body of water that often feeds into a river. Similarly, a dinghy is a smaller boat often associated with a larger vessel, such as a yacht.

Question 106: CAT is to FELINE as NECKLACE is to …

Brooch
Charm
Trinket
Jewelry (Correct answer)

Correct answer: Jewelry

Explanation: The relationship between "cat" and "feline" is that a cat is a specific type of feline, just as a necklace is a specific type of jewelry. The other options (brooch, trinket, charm) are all types of jewelry or accessories but do not represent the same relationship as "cat" to "feline."

Question 107: What ONE number can replace BOTH question marks? 1/? = ?/36

9
6 (Correct answer)
3
None of these

Correct answer: 6

Explanation: To find the missing number, cross multiply: 1 × 36 = 6 × ?. This simplifies to 36 = 6?. Divide both sides by 6:36/6 = 6?/6. This gives 6 = ?. Therefore, the missing number that can replace both question marks is 6.

Question 108: If Gear A turns clockwise and is meshed directly with Gear B, which way will Gear B turn?

Clockwise
It will not turn
In the same direction as Gear A
Counter-clockwise (Correct answer)

Correct answer: Counter-clockwise

When two external gears are meshed directly, they always rotate in opposite directions. Therefore, if Gear A turns clockwise, Gear B must turn counter-clockwise.

Question 109: A car travels from City A to City B at 60 km/h and returns at 40 km/h. What is the average speed for the entire round trip?

52 km/h
45 km/h
48 km/h (Correct answer)
50 km/h

Correct answer: 48 km/h

Average speed = 2 × 60 × 40 ÷ (60 + 40) = 4800 ÷ 100 = 48 km/h.

Question 110: Which word is a synonym for PRAGMATIC?

Theoretical
Idealistic
Careless
Practical (Correct answer)

Correct answer: Practical

'Pragmatic' means dealing with things sensibly and realistically in a way that is based on practical rather than theoretical considerations. 'Practical' is the closest synonym, as it also refers to the actual doing or use of something rather than theory.

Question 111: Which word is a synonym for UBIQUITOUS?

Hidden
Local
Widespread (Correct answer)
Rare

Correct answer: Widespread

'Ubiquitous' means present, appearing, or found everywhere. 'Widespread' similarly means found or distributed over a large area or number of people. 'Rare' is an antonym, while 'Hidden' and 'Local' have opposite meanings.

Defence Aptitude Assessment (DAA)

The Defence Aptitude Assessment (DAA) is a computer-based cognitive test used by the UK Armed Forces (RAF, Royal Navy, Army) to assess candidates' suitability for specific roles. It consists of six timed sections covering verbal, numerical, spatial, mechanical, and electrical reasoning.

111

Questions

90 min

Time Limit

50%

To Pass

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