MASS Test — Questions and Answers

Question 1: Why must hearing protection be worn in turbine and pump halls?

To filter dust particles
Because sustained high noise levels can cause permanent hearing loss (Correct answer)
To block radio chatter
To keep workers warm

Correct answer: Because sustained high noise levels can cause permanent hearing loss

Rotating equipment produces noise above safe exposure limits, leading to irreversible hearing damage over time.

Question 2: What is the purpose of a guard on a coupling between a motor and pump?

To reduce electrical load
To improve cooling
To increase rotational speed
To prevent contact with rotating parts that can cause entanglement (Correct answer)

Correct answer: To prevent contact with rotating parts that can cause entanglement

Coupling guards block access to rotating shafts that could entangle clothing, hair, or limbs.

Question 3: A shirt costs $40 and is marked down by 25%. What is the sale price?

$35
$25
$10
$30 (Correct answer)

Correct answer: $30

25% of $40 is $10, so $40 − $10 = $30.

Question 4: A bag has 3 red and 2 blue marbles. What is the probability of drawing red?

2/5
1/5
3/5 (Correct answer)
1/2

Correct answer: 3/5

There are 3 red out of 5 total marbles, so the probability is 3/5.

Question 5: A wire is 3 meters long. How many 25-centimeter pieces can be cut from it?

14
12 (Correct answer)
16
10

Correct answer: 12

3 meters is 300 cm, and 300 ÷ 25 = 12 pieces.

Question 6: When working at heights, which device prevents a worker from falling?

Hard hat
Hearing protection
Personal fall arrest system (Correct answer)
Steel-toe boots

Correct answer: Personal fall arrest system

A personal fall arrest system stops a worker after a fall begins.

Question 7: What is a key consequence of failing to call Dig Safe before excavating in Massachusetts?

Only a verbal warning
Fines and liability for damages, with penalties that can reach thousands of dollars (Correct answer)
No consequences for small jobs
A one-day work suspension

Correct answer: Fines and liability for damages, with penalties that can reach thousands of dollars

Failure to notify can result in significant fines and full liability for any damage caused.

Question 8: When two workers carry a long load, they should:

Coordinate movements and lift at the same time (Correct answer)
Carry it on one shoulder each without talking
Drag it to avoid lifting
Each lift at their own pace

Correct answer: Coordinate movements and lift at the same time

Coordinated team lifting prevents sudden strain and dropped loads.

Question 9: Two pieces in a shape puzzle have matching slanted edges. What does this suggest?

The pieces cannot be used together
One piece must be discarded
Those edges likely join together in the assembly (Correct answer)
The edges must be flipped to match

Correct answer: Those edges likely join together in the assembly

Matching edge lengths and angles indicate where pieces connect.

Question 10: To verify a finished assembly, you should confirm that:

All pieces are the same size
The outline is a perfect square
The figure is symmetrical
Every piece is used and fits without gaps or overlaps (Correct answer)

Correct answer: Every piece is used and fits without gaps or overlaps

A valid assembly uses all pieces with no gaps and no overlaps.

Question 11: Katy is half the age of her sister. In 20 years, she will be three-fourths her sister's age. How old is she?

5
14
10 (Correct answer)
12

Correct answer: 10

Let Katy's current age be K and her sister's current age be S. From the first statement, K = S/2. In 20 years, their ages will be K+20 and S+20, and the problem states K+20 = (3/4)(S+20). Substituting S = 2K into the second equation gives K+20 = (3/4)(2K+20), which simplifies to K+20 = (3/2)K + 15. Solving for K yields K = 10.

Question 12: When should the hand signal be completed?

Long after the maneuver
Before you begin the maneuver (Correct answer)
It does not matter
Only during the maneuver

Correct answer: Before you begin the maneuver

Signals should be given before beginning the maneuver so others can prepare.

Question 13: What is 7/10 + 1/5?

8/15
4/5
1
9/10 (Correct answer)

Correct answer: 9/10

1/5 = 2/10, so 7/10 + 2/10 = 9/10.

Question 14: Why is it important to maintain the markings throughout the duration of the excavation project?

To indicate property boundaries
To satisfy a paperwork requirement only
So the excavator always knows the location of underground facilities and avoids strikes (Correct answer)
Because paint must legally stay for one year

Correct answer: So the excavator always knows the location of underground facilities and avoids strikes

Visible, accurate markings throughout the job help prevent accidental strikes and keep workers safe.

Question 15: A warning label on an electrical control panel reads: 'DANGER: Hazardous Voltage. Contact may cause electric shock or burn. Disconnect and lock out power source before opening or servicing. Only qualified personnel should perform work on this equipment.' Based on this label, what is the most critical action that must be performed to ensure safety before servicing?

Wear insulated gloves.
Disconnect and lock out the power source. (Correct answer)
Confirm that you are qualified personnel.
Open the panel to inspect the wiring.

Correct answer: Disconnect and lock out the power source.

While being qualified is a requirement, the label explicitly commands the primary action to prevent the hazard: 'Disconnect and lock out power source before opening or servicing.' This step de-energizes the equipment, which is the most critical action to prevent electric shock.

Question 16: Which fraction is equivalent to 0.6?

2/3
3/5 (Correct answer)
5/8
2/5

Correct answer: 3/5

0.6 = 6/10 = 3/5.

Question 17: Which type of gear is best suited for transmitting power between two non-intersecting, non-parallel shafts, often at a right angle?

Spur Gear
Worm Gear (Correct answer)
Helical Gear
Bevel Gear

Correct answer: Worm Gear

Worm gears are specifically designed to transmit power at a right angle between two shafts that do not intersect. They are also known for providing large gear reductions and high torque.

Question 18: When reading a crane's load chart, the term "Gross Capacity" or "Rated Capacity" refers to the total weight that can be lifted at a specific radius and includes which of the following?

The weight of the object plus a 15% safety factor.
The maximum load allowed during high-wind conditions.
Only the weight of the object being lifted.
The weight of the object, all rigging, and the hook block. (Correct answer)

Correct answer: The weight of the object, all rigging, and the hook block.

Gross Capacity is the total load the crane can support at a given configuration, as indicated on the chart. This value includes the actual load to be lifted (net load) plus all capacity deductions like the hook block, rigging, spreader bars, etc.

Question 19: A discount of 25% is applied to a $80 tool. What is the sale price?

$70
$65
$60 (Correct answer)
$55

Correct answer: $60

25% of 80 is 20, so 80 − 20 = $60.

Question 20: What should a worker do if a colleague collapses inside a confined space?

Wait for the next shift
Open a window for ventilation only
Immediately enter to pull them out
Activate the rescue plan and summon trained rescuers without entering unprotected (Correct answer)

Correct answer: Activate the rescue plan and summon trained rescuers without entering unprotected

Untrained entry is a leading cause of multiple fatalities, so the rescue plan and trained responders must be activated.

Question 21: Which scenario most requires using a hand signal as a backup?

A car in a closed garage
A parked vehicle
A new car with working lights
A vehicle with a burned-out brake light (Correct answer)

Correct answer: A vehicle with a burned-out brake light

A burned-out brake or turn light makes hand signals essential to communicate intent.

Question 22: Carlo left home with $6.50 in his purse. He spent $4.25 on foods and $2.00 on toys. Later, his friend returned the $2.50 he had borrowed the day before. How much money does Carlo currently have in his purse?

$1.50
$3.65
$7.25
$2.75 (Correct answer)

Correct answer: $2.75

To find out how much money Carlo has, you need to track his transactions. He started with $6.50, then spent $4.25 (leaving $2.25) and another $2.00 (leaving $0.25). Finally, his friend returned $2.50, so you add that to his current amount: $0.25 + $2.50 = $2.75.

Question 23: What does a red color code on a rigging sling typically indicate?

The sling was last inspected in Q1
The sling's capacity is 3/8 inch or a specific load rating per the manufacturer's color system (Correct answer)
The sling is out of service
The sling is approved for overhead lifts only

Correct answer: The sling's capacity is 3/8 inch or a specific load rating per the manufacturer's color system

Color coding on slings typically corresponds to the sling size or capacity per the manufacturer's or industry color identification system, with red commonly indicating a specific size rating.

Question 24: What is the next number in the sequence: 3, 6, 12, 24, ...?

48 (Correct answer)
36
42
54

Correct answer: 48

Each term doubles, so 24 × 2 = 48.

Question 25: What color marks potable (drinking) water lines?

Blue (Correct answer)
Green
Purple
White

Correct answer: Blue

Blue marks potable drinking water lines under the APWA uniform color code.

Question 26: A gear with 20 teeth meshes with a gear of 40 teeth. If the small gear turns twice, how many turns does the large gear make?

4 turns
1 turn (Correct answer)
0.5 turns
2 turns

Correct answer: 1 turn

The larger gear turns at half the rate, so two turns of the small gear equal one turn of the large gear.

Question 27: When climbing a fixed ladder above a certain height, what fall protection is typically required?

A second worker holding the ladder base
Only gloves
No protection is needed
A cage, ladder safety system, or personal fall arrest (Correct answer)

Correct answer: A cage, ladder safety system, or personal fall arrest

Fixed ladders above the regulated height require a cage, ladder safety device, or personal fall arrest system.

Question 28: If a machinist produces 12 parts in 3 hours, how many parts can they produce in an 8-hour shift at the same rate?

24
32 (Correct answer)
36
28

Correct answer: 32

The rate is 4 parts per hour, so 4 × 8 = 32 parts.

Question 29: A wire-rope load line on a multiple-part reeving system shares the load across the parts. Increasing the parts of line primarily:

Increases boom length
Changes the load radius
Increases the lifting capacity of the hoist line (Correct answer)
Reduces counterweight needs

Correct answer: Increases the lifting capacity of the hoist line

More parts of line distribute the load across more rope sections, raising the line's effective capacity.

Question 30: An instruction states: "Press and hold the reset button for 5 seconds to clear the fault." Briefly tapping the button will:

Restart the system
Save settings
Clear the fault
Not clear the fault (Correct answer)

Correct answer: Not clear the fault

A brief tap does not meet the 5-second hold requirement.

Question 31: A worker discovers a small fire involving energized electrical equipment in a control room. Several fire extinguishers are available. Which class of fire extinguisher is specifically designed for this situation?

Class C (Correct answer)
Class D
Class A
Class K

Correct answer: Class C

Fires are categorized into classes based on their fuel source. A Class C fire involves energized electrical equipment. Class C extinguishers use non-conductive agents, such as carbon dioxide (CO2) or dry chemical, which are safe to use on electrical fires. Using a water-based extinguisher (Class A) would create a severe electric shock hazard.

Question 32: Capacities based on structural strength rather than stability are most often limited by what?

The strength of the boom and crane components (Correct answer)
The amount of counterweight only
The wind direction
The operator's reach

Correct answer: The strength of the boom and crane components

Structural-strength ratings are governed by the load-bearing limits of the boom and other components.

Question 33: In a pneumatic diagram, a symbol shows a circle with a solid, equilateral triangle inside, where the triangle points outwards from the center. What does this component symbol represent?

A filter-regulator unit
A pressure gauge
A pneumatic motor (Correct answer)
An air compressor

Correct answer: A pneumatic motor

According to ISO 1219 standard symbols for fluid power, a circle represents a rotary energy conversion device. A solid triangle indicates the direction of fluid flow (in this case, pneumatic). An outward-pointing triangle signifies an output device, like a motor, which converts pneumatic energy into mechanical motion. An inward-pointing triangle would represent a pump or compressor.

Question 34: Which fraction is equivalent to 0.75?

4/5
1/2
2/3
3/4 (Correct answer)

Correct answer: 3/4

3 divided by 4 equals 0.75.

Question 35: You are following a cyclist whose left arm points straight down with the palm back. What is being signaled?

Speeding up
Nothing important
Turning left sharply
Slowing or stopping (Correct answer)

Correct answer: Slowing or stopping

An arm pointing down typically signals the cyclist is slowing or stopping.

Question 36: When the same object is rotated in the answer choices, which feature stays unchanged?

Its color
The number of dots added
Its overall size and shape (Correct answer)
Its position on the page only

Correct answer: Its overall size and shape

Rotation preserves size and shape; only orientation changes.

Question 37: When approaching a school bus with flashing red lights in Massachusetts, you must:

Stop only if children are visible
Stop at least 100 feet away and remain stopped (Correct answer)
Pass carefully on the left
Slow to 20 mph

Correct answer: Stop at least 100 feet away and remain stopped

Drivers in both directions must stop at least 100 feet from a bus with flashing red lights until they are turned off.

Question 38: What color marking indicates gas, oil, steam, or petroleum pipelines?

Red
Green
Yellow (Correct answer)
Purple

Correct answer: Yellow

Yellow marks gas, oil, steam, petroleum, and other gaseous or flammable materials under the APWA color code.

Question 39: The hierarchy of hazard controls ranks which method as most effective?

Personal protective equipment
Warning signs
Elimination of the hazard (Correct answer)
Safety training

Correct answer: Elimination of the hazard

Removing the hazard entirely is the most effective control.

Question 40: If two answer choices look nearly identical, you should compare:

The brightness of the image
Only the overall outline
Small details like edge angles and piece orientation (Correct answer)
The total page area used

Correct answer: Small details like edge angles and piece orientation

Subtle differences in angle or orientation distinguish the correct answer.

Question 41: During a hot work operation near flammable materials, what is the role of a fire watch?

To monitor for sparks and ignition during and after the work (Correct answer)
To record production output
To operate the welding torch
To inspect the finished weld quality

Correct answer: To monitor for sparks and ignition during and after the work

A fire watch observes for stray sparks or smoldering and remains for a period after work to catch delayed ignition.

Question 42: If 3/5 of a number is 27, what is the number?

35
45 (Correct answer)
54
40

Correct answer: 45

27 ÷ (3/5) = 27 × 5/3 = 45.

Question 43: Why should tools be returned to their proper storage after use?

To avoid having to inspect them
To hide them from coworkers
To prevent tripping hazards and keep them in good condition (Correct answer)
To make the area look busier

Correct answer: To prevent tripping hazards and keep them in good condition

Proper storage reduces hazards and protects tool condition.

Question 44: Which of the following correctly describes the 'restricted approach boundary' in the context of electrical safety near power lines?

The perimeter marked by the lift director for rigging personnel
The area where crane counterweights may swing freely
The zone around energized conductors where unqualified workers must not enter without protection (Correct answer)
The maximum boom radius allowed on a job site

Correct answer: The zone around energized conductors where unqualified workers must not enter without protection

The restricted approach boundary defines the zone near energized conductors where unqualified workers face shock risk and must not enter without specific protective equipment and authorization.

Question 45: What is the danger of bypassing an interlock on rotating equipment?

It removes a safety stop that prevents access to moving parts (Correct answer)
It improves lubrication
It saves electricity
It reduces noise

Correct answer: It removes a safety stop that prevents access to moving parts

Interlocks stop equipment when guards are opened, and bypassing them exposes workers to dangerous moving parts.

Question 46: When riding a bicycle, which hand is typically used for standard hand signals?

The left hand (Correct answer)
Either hand interchangeably
Both hands at once
The right hand only

Correct answer: The left hand

Standard hand signals are made with the left arm to keep them consistent with vehicle signaling.

Question 47: If a car travels 180 miles in 3 hours, what is its average speed?

60 mph (Correct answer)
55 mph
50 mph
65 mph

Correct answer: 60 mph

180 miles ÷ 3 hours = 60 mph.

Question 48: An operator is performing a pre-use inspection on a lattice boom crane and notices that a modification has been made to the boom structure. According to 520 CMR 6.09, what is required for this modification to be considered acceptable?

The modification must be inspected and approved by the site supervisor.
The modification must have the manufacturer's written approval or be certified by a professional engineer. (Correct answer)
The modification must be recorded in the daily logbook by the operator.
The operator must test the modification with a 125% proof load.

Correct answer: The modification must have the manufacturer's written approval or be certified by a professional engineer.

520 CMR 6.09(d) explicitly states that any modification made to hoisting machinery must be done with the manufacturer's written approval. If that cannot be obtained, a professional engineer must create and certify a procedure, which must be added to the equipment's permanent record. This ensures that the equipment's safety factor is not compromised.

Question 49: What color marks communication, alarm, signal lines, cables, and conduit?

Blue
Yellow
Red
Orange (Correct answer)

Correct answer: Orange

Orange marks communication, alarm or signal lines, cables, and conduit such as telephone and cable TV.

Question 50: A burning smell while driving could indicate:

Properly working wipers
A clean interior
A fresh air filter
Overheating brakes, clutch, or electrical issues (Correct answer)

Correct answer: Overheating brakes, clutch, or electrical issues

A burning smell may signal overheating brakes, a slipping clutch, or electrical problems that need inspection.

Question 51: You see a driver's left arm extended downward out the window. What should you expect?

The vehicle is turning right
The vehicle is turning left
The vehicle is slowing or stopping (Correct answer)
The vehicle is about to speed up

Correct answer: The vehicle is slowing or stopping

A downward-bent left arm signals the driver is slowing or stopping.

Question 52: Which PPE protects against airborne dust and particles?

Ear plugs
Cut-resistant gloves
Respirator or dust mask (Correct answer)
Safety glasses

Correct answer: Respirator or dust mask

Respirators filter harmful airborne particles from the air you breathe.

Question 53: A written and signed record of all inspections must be kept with the hoisting machinery and be available for examination by the Department of Public Safety. According to 520 CMR 6.00, this record must conform with the requirements of which federal regulation?

SAE J1307-2002
M.G.L. c. 146
ASME B30.5
29 CFR 1926.1412 (Correct answer)

Correct answer: 29 CFR 1926.1412

520 CMR 6.01 explicitly states that a written and signed record of all inspections shall be kept with the hoisting machinery and made available for examination by the Department, and that this record must conform with the requirements of 29 CFR 1926.1412, which is the OSHA regulation for construction concerning crane and derrick inspections.

Question 54: What color marks reclaimed water, irrigation, and slurry lines?

Green
Blue
Pink
Purple (Correct answer)

Correct answer: Purple

Purple marks reclaimed water, irrigation, and slurry lines under the color code.

Question 55: A worker earns $18 per hour and works 35 hours. What are the weekly earnings?

$600
$680
$630 (Correct answer)
$530

Correct answer: $630

18 × 35 = $630.

Question 56: A manual reads: "If the warning light flashes, stop the machine and contact a supervisor." A flashing light requires you to:

Restart the machine
Continue operating
Ignore the light
Stop and contact a supervisor (Correct answer)

Correct answer: Stop and contact a supervisor

A flashing light directs you to stop and contact a supervisor.

Question 57: What is the volume of a cube with edge length 4 cm?

64 cm³ (Correct answer)
16 cm³
48 cm³
96 cm³

Correct answer: 64 cm³

Volume = edge³ = 4 × 4 × 4 = 64 cm³.

Question 58: What does an extended left arm bent upward at the elbow most commonly mean?

Hazard ahead
Left turn
Right turn (Correct answer)
Stop

Correct answer: Right turn

Left arm out and bent upward signals a right turn.

Question 59: An isometric drawing shows an object with:

A flat top view
A cut interior
Only one face
Three faces at equal angles (Correct answer)

Correct answer: Three faces at equal angles

Isometric views display three faces with equal 120° angles.

Question 60: If 5 pencils cost $2.00, how much do 8 pencils cost?

$4.00
$3.20 (Correct answer)
$3.00
$2.80

Correct answer: $3.20

Each pencil costs $0.40, so 8 × $0.40 = $3.20.

Question 61: What is the main purpose of a plant emergency evacuation drill?

To check fire extinguisher color
To reduce the workday
To ensure workers know routes, assembly points, and procedures (Correct answer)
To test the public address speakers only

Correct answer: To ensure workers know routes, assembly points, and procedures

Drills familiarize workers with evacuation routes, assembly points, and roles so they respond effectively in a real emergency.

Question 62: In Massachusetts, what is the penalty for driving without a valid license?

Warning only
No penalty
Free reinstatement
Fines and possible jail for repeat offenses (Correct answer)

Correct answer: Fines and possible jail for repeat offenses

Unlicensed operation carries fines and can include jail time for repeat offenders.

MASS Test

The MASS Test exam validates essential knowledge and skills required for certification or licensure in this field.

Questions

60 min

Time Limit

70%

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