EIAT - Elevator Industry Aptitude Test (NEIEP) — Questions and Answers

Question 1: When using a ladder near electrical equipment, the ladder should be made of:

Wood for any situation
Steel for strength
Fiberglass for non-conductivity (Correct answer)
Aluminum for lightweight use

Correct answer: Fiberglass for non-conductivity

Fiberglass ladders are non-conductive and required when working near energized electrical equipment to prevent electrocution.

Question 2: In a 3-wire control circuit, the purpose of the holding (seal-in) contact is to:

Limit the inrush current during motor starting
Prevent the motor from starting without a valid start signal
Maintain the motor starter coil energized after the start button is released (Correct answer)
Provide a second path for the overload relay current

Correct answer: Maintain the motor starter coil energized after the start button is released

The holding contact (a NO auxiliary contact wired in parallel with the start button) seals in the circuit so the motor continues to run after the momentary start button is released.

Question 3: What is the function of a control transformer in a motor control panel?

To isolate the motor windings from the power supply during safety testing
To step down the line voltage to a lower, safer control circuit voltage such as 120V (Correct answer)
To convert three-phase power into single-phase for small control devices
To step up the voltage from the utility feed to the motor rated voltage

Correct answer: To step down the line voltage to a lower, safer control circuit voltage such as 120V

The control transformer steps down the high line voltage (e.g., 480V) to a safer, lower voltage (typically 120V) dedicated to powering the control components.

Question 4: When viewed from the front, an object looks like a circle. When viewed from the side, it looks like a rectangle. What is the object most likely?

Cylinder (Correct answer)
Cube
Sphere
Cone

Correct answer: Cylinder

A cylinder appears as a circle when viewed from the top/bottom and as a rectangle when viewed from the side.

Question 5: What does NEC stand for in the electrical industry?

National Equipment Compliance
National Engineering Council
North American Electrical Certification
National Electrical Code (Correct answer)

Correct answer: National Electrical Code

The NEC (National Electrical Code) is the benchmark for safe electrical design, installation, and inspection in the United States.

Question 6: What does IBEW stand for?

International Board of Electrical Wiring
International Brotherhood of Electrical Workers (Correct answer)
Interstate Bureau of Electrical Work
Independent Bureau of Electrical Workers

Correct answer: International Brotherhood of Electrical Workers

IBEW — the International Brotherhood of Electrical Workers — is the labor union representing electrical workers in the US and Canada.

Question 7: What does a capacitor store?

Electrical charge (Correct answer)
Resistance
Magnetic energy
Current

Correct answer: Electrical charge

A capacitor stores electrical charge (and thus electrical potential energy) in an electric field between its plates.

Question 8: Revision clouds on a blueprint indicate:

Locations of HVAC equipment
Sections of the drawing that have been changed since the last issued version (Correct answer)
Areas with poor reception for wireless systems
Weather protection requirements

Correct answer: Sections of the drawing that have been changed since the last issued version

Revision clouds are drawn around modified areas of a blueprint to highlight what has changed between drawing revisions.

Question 9: The primary purpose of a conduit reamer is to:

Cut conduit to length
Remove burrs from the inside of cut conduit ends (Correct answer)
Thread conduit ends
Bend conduit at precise angles

Correct answer: Remove burrs from the inside of cut conduit ends

A reamer removes sharp burrs left on the inside of conduit after cutting, preventing damage to wire insulation during pull-through.

Question 10: Work-life balance schemes in the workplace have been __ by employees, as they increase morale and at work.

applauded, motivated
applaud, motivation
applauded, motivation (Correct answer)
applaud, motivated

Correct answer: applauded, motivation

The passive construction "have been ______ by employees" requires the past participle "applauded," and "increase morale and ______" needs a noun parallel to "morale," which is "motivation." The forms "applaud" (wrong tense) and "motivated" (adjective, not parallel to the noun morale) break the sentence's grammar.

Question 11: How many students are required to type 700 pages in two days if two students who work part-time at a typing pool can do it in three days?

8
3 (Correct answer)
4
6

Correct answer: 3

Two students working for 3 days equals 2 × 3 = 6 student-days of work to type 700 pages. To complete that same amount of work in only 2 days, divide the total by the days: 6 ÷ 2 = 3 students. More students (4, 6, or 8) would finish the job faster than required.

Question 12: Which of the following is a common cause of electrical fires?

Overloaded circuits (Correct answer)
GFCI outlets
Properly rated breakers
Using copper wire

Correct answer: Overloaded circuits

Overloaded circuits generate excess heat that can ignite surrounding materials, making them a leading cause of electrical fires.

Question 13: Lockout/Tagout (LOTO) procedures are used to:

Lock electrical panels from unauthorized use
Prevent unexpected energization of equipment during maintenance (Correct answer)
Secure tool storage
Log out of building access systems

Correct answer: Prevent unexpected energization of equipment during maintenance

LOTO procedures ensure equipment is properly shut off and cannot be re-energized while workers perform service or maintenance.

Question 14: In the sequence 2, 4, 8, 16, 32, what is the next number?

56
36
64 (Correct answer)
48

Correct answer: 64

Each number doubles the previous one (×2 pattern), so 32 × 2 = 64.

Question 15: In a two-speed motor control circuit using a single stator winding (consequent pole method), what determines the two speeds?

Varying the supply voltage between two preset levels
Reconnecting the stator windings to change the effective number of magnetic poles (Correct answer)
Adjusting the rotor resistance through an external rheostat
Using two separate motors coupled to a common shaft

Correct answer: Reconnecting the stator windings to change the effective number of magnetic poles

A consequent pole motor changes speed by reconnecting the stator windings to alter the effective number of poles, since synchronous speed equals 120 times frequency divided by the number of poles.

Question 16: According to NEC Article 430, the branch circuit conductors supplying a single continuous-duty motor must have an ampacity of at least:

150% of the motor full-load current (FLC)
125% of the motor full-load current (FLC) (Correct answer)
115% of the motor full-load current (FLC)
100% of the motor full-load current (FLC)

Correct answer: 125% of the motor full-load current (FLC)

NEC 430.22 requires motor branch circuit conductors to have an ampacity of at least 125% of the motor's full-load current to safely handle the heat produced by continuous-duty operation.

Question 17: What color combination is typically used for safety warning signs indicating electrical hazards?

Red and white
Yellow and black (Correct answer)
Blue and white
Orange and black

Correct answer: Yellow and black

Yellow and black is the standard ANSI color combination for electrical caution and warning signs.

Question 18: A circular junction box has a diameter of 4 inches. What is its approximate circumference?

12.6 inches (Correct answer)
6.3 inches
8 inches
25.1 inches

Correct answer: 12.6 inches

Circumference = π × diameter = 3.14 × 4 ≈ 12.6 inches.

Question 19: When installing a circuit breaker, the correct installation requires that the breaker:

Snap firmly onto the bus bar and be torqued per manufacturer specs (Correct answer)
Be installed with handles facing left
Be installed with the load wire on the line terminal
Be filled with thermal paste for heat transfer

Correct answer: Snap firmly onto the bus bar and be torqued per manufacturer specs

A circuit breaker must snap positively onto the panel bus bar and all lugs must be torqued to manufacturer specifications to ensure proper contact.

Question 20: An apprentice works Monday through Friday. He works 7.5 hours on Monday, 8 hours each on Tuesday and Wednesday, 6.5 hours on Thursday, and 9 hours on Friday. What is his total weekly hours?

39 hours (Correct answer)
40 hours
39.5 hours
38 hours

Correct answer: 39 hours

7.5 + 8 + 8 + 6.5 + 9 = 39 hours.

Question 21: What is the typical duration of an IBEW inside wireman apprenticeship program?

2 years
3 years
5 years (Correct answer)
7 years

Correct answer: 5 years

The IBEW inside wireman apprenticeship is a 5-year program combining on-the-job training and classroom instruction.

Question 22: If RED = 27 using letter positions (R=18, E=5, D=4), what does CAT equal (C=3, A=1, T=20)?

30
18
24 (Correct answer)
33

Correct answer: 24

CAT = C(3) + A(1) + T(20) = 24; the pattern sums the alphabetical position values of each letter.

Question 23: Which word does NOT belong: hammer, screwdriver, wrench, voltmeter, pliers?

Hammer
Pliers
Voltmeter (Correct answer)
Screwdriver

Correct answer: Voltmeter

A voltmeter is a measuring instrument while all others are mechanical hand tools used for fastening or gripping.

Question 24: What is a job hazard analysis (JHA)?

An OSHA citation form
A document that identifies and controls hazards before a task begins (Correct answer)
A post-accident report
A weekly safety meeting log

Correct answer: A document that identifies and controls hazards before a task begins

A JHA (also called Job Safety Analysis) breaks a task into steps, identifies hazards at each step, and outlines control measures before work starts.

Question 25: An electrical box is mounted flush with a wall. If the wall is ½ inch thick drywall, how deep must the box extend into the wall stud cavity?

½ inch plus the box depth
Exactly ½ inch
The full box depth
The box depth minus ½ inch (Correct answer)

Correct answer: The box depth minus ½ inch

The box must be set so its face is flush with the finished surface, meaning it extends into the cavity by its total depth minus the drywall thickness.

Question 26: What does a megohmmeter (megger) test?

Phase rotation of a motor
Continuity of a fuse
Voltage output of a circuit
Insulation resistance of conductors and equipment (Correct answer)

Correct answer: Insulation resistance of conductors and equipment

A megohmmeter (megger) applies high DC voltage and measures insulation resistance in megohms to detect deteriorating or damaged insulation.

Question 27: The sequence is: A1, B2, C3, D4, _. What comes next?

D5
E4
F5
E5 (Correct answer)

Correct answer: E5

Each term advances one letter in the alphabet and increments the number by one, so the next term is E5.

Question 28: Apprentice A works 40 hours/week. Apprentice B works 35 hours/week. After 4 weeks, how many more hours has Apprentice A worked?

20 hours (Correct answer)
10 hours
25 hours
15 hours

Correct answer: 20 hours

Difference per week = 40 - 35 = 5 hours; over 4 weeks = 5 × 4 = 20 hours more for Apprentice A.

Question 29: Which valve type provides the most gradual and precise flow control in a piping system?

Check valve
Globe valve (Correct answer)
Ball valve
Gate valve

Correct answer: Globe valve

Globe valves have a plug that moves perpendicular to flow, allowing fine incremental adjustment of flow rate.

Question 30: What does 'lockout/tagout' (LOTO) protect workers from?

Overloading circuits
Lightning strikes on job sites
Electrical fires in panel boxes
Unexpected energization of equipment during maintenance (Correct answer)

Correct answer: Unexpected energization of equipment during maintenance

Lockout/tagout procedures ensure equipment is de-energized and cannot be accidentally restarted while workers perform maintenance.

Question 31: Looking at a series: triangle, square, pentagon, hexagon — what comes next?

Quadrilateral
Heptagon (Correct answer)
Circle
Octagon

Correct answer: Heptagon

The pattern adds one side each time (3, 4, 5, 6 sides), so the next shape has 7 sides — a heptagon.

Question 32: What does NEMA stand for in the context of motor controls?

North American Electrical Motor Authority
National Electrical Manufacturers Association (Correct answer)
National Engineering and Manufacturing Alliance
National Equipment Monitoring Agency

Correct answer: National Electrical Manufacturers Association

NEMA stands for National Electrical Manufacturers Association, the body that sets standards for motor starters, enclosures, and other electrical equipment.

Question 33: If you rotate a right triangle 90 degrees clockwise, which side becomes the new base?

The side that was horizontal
The hypotenuse
The shortest side
The side that was vertical (Correct answer)

Correct answer: The side that was vertical

When rotated 90 degrees clockwise, the vertical side becomes horizontal and serves as the new base.

Question 34: Which transformation of a capital letter 'R' would make it look most like a mirrored image?

Rotate 180 degrees
Flip horizontally (Correct answer)
Flip vertically
Rotate 90 degrees clockwise

Correct answer: Flip horizontally

Flipping a letter horizontally (left-right mirror) creates a true mirrored image of the letter.

Question 35: Which NEC article primarily covers the installation requirements for motors, motor circuits, and motor controllers?

Article 210
Article 460
Article 430 (Correct answer)
Article 445

Correct answer: Article 430

NEC Article 430 covers motors, motor circuits, and controllers, including conductor sizing, overcurrent protection sizing, and disconnecting means requirements.

Question 36: The following sentence appears in a training document: 'Proper tool maintenance not only extends equipment life but also reduces the risk of on-the-job injuries.' Which relationship between ideas does 'not only…but also' express?

Contrast
Addition of parallel benefits (Correct answer)
Cause and effect
Sequence of events

Correct answer: Addition of parallel benefits

'Not only…but also' is a correlative conjunction that adds one benefit to another.

Question 37: In motor control terminology, what does 'JOG' mode refer to?

Gradually ramping up motor speed over several minutes
Running the motor at reduced voltage for extended periods
Briefly energizing the motor to inch it to a specific position (Correct answer)
A method of reversing motor direction at full speed

Correct answer: Briefly energizing the motor to inch it to a specific position

Jogging (or inching) briefly energizes the motor for precise positioning by bypassing the holding contact so the motor only runs while the jog button is held.

Question 38: A blueprint shows a rectangular room that is 12 feet wide and 18 feet long. If the scale is 1 inch = 3 feet, what are the blueprint dimensions?

6 inches × 9 inches
4 inches × 6 inches (Correct answer)
2 inches × 4 inches
3 inches × 5 inches

Correct answer: 4 inches × 6 inches

At a scale of 1 inch = 3 feet, divide each dimension by 3: 12/3 = 4 inches wide and 18/3 = 6 inches long.

Question 39: Which class of fire extinguisher is safe for electrical fires?

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

Correct answer: Class C

Class C fire extinguishers use non-conductive agents (like CO₂ or dry chemical) that are safe for electrical fires.

Question 40: A grid has 3 rows and 3 columns. Each row contains 1, 2, 3 in some order, and so does each column. If Row 1 is 1,2,3 and Row 2 starts with 2, what is Row 2?

3, 2, 1
2, 2, 2
2, 1, 3
2, 3, 1 (Correct answer)

Correct answer: 2, 3, 1

Column 2 already has 2, so Row 2's second element must be 3, and the third must be 1: Row 2 = 2, 3, 1.

Question 41: Which number best completes the analogy? 3:9 :: 5:?

25 (Correct answer)
10
15
20

Correct answer: 25

The relationship is squaring the number: 3² = 9, so 5² = 25.

Question 42: In a motor control center (MCC), what is the purpose of a 'bucket'?

A dedicated space reserved for future expansion of the motor control center
A grounding electrode conductor assembly for the entire MCC enclosure
A removable compartment containing the starter, overload relay, and associated components for a single motor circuit (Correct answer)
The main bus compartment where the incoming power feed connects to the MCC

Correct answer: A removable compartment containing the starter, overload relay, and associated components for a single motor circuit

In an MCC, a 'bucket' is a self-contained, draw-out or plug-in compartment housing the starter, overload relay, control transformer, and related components for one motor circuit.

Question 43: What does a transformer do in an electrical system?

Changes AC voltage from one level to another (Correct answer)
Converts AC to DC
Stores electrical energy
Measures electrical current

Correct answer: Changes AC voltage from one level to another

A transformer uses electromagnetic induction to step up or step down AC voltage levels.

Question 44: A GFCI outlet is designed to protect against:

Short circuits
Overloads
Ground faults and electrocution (Correct answer)
Power surges

Correct answer: Ground faults and electrocution

A Ground Fault Circuit Interrupter (GFCI) detects imbalances in current flow and trips within milliseconds to prevent electrocution.

Question 45: In a ladder logic diagram used for motor control, what does a normally closed (NC) contact symbol represent?

A contact that is closed during normal (de-energized) operation and opens when energized (Correct answer)
A contact that is open during normal (de-energized) operation
A contact controlled exclusively by an external timer relay
A contact that can only be reset manually after tripping

Correct answer: A contact that is closed during normal (de-energized) operation and opens when energized

An NC contact passes current in its normal (de-energized) state and opens (interrupts current) when its associated coil is energized or the device is actuated.

Question 46: What is the formula for calculating electrical power?

P = V + I
P = I / V
P = V × I (Correct answer)
P = V / I

Correct answer: P = V × I

Electrical power (in watts) is calculated as P = V × I, where V is voltage and I is current.

Question 47: Which color is used for OSHA-required safety warnings indicating danger?

Red (Correct answer)
Orange
Yellow
Blue

Correct answer: Red

Red is used for danger signs and labels indicating an imminently hazardous situation that could result in death or serious injury.

Question 48: What is the purpose of the NEC's conduit fill rules?

To require conduit on all wiring runs
To limit the number of conductors in a conduit to prevent overheating (Correct answer)
To specify conduit material types
To set minimum conduit sizes for all installations

Correct answer: To limit the number of conductors in a conduit to prevent overheating

NEC conduit fill rules limit how many wires can be installed in a conduit to prevent overheating and damage to wire insulation.

Question 49: If all electricians are tradespeople, and some tradespeople are union members, which statement must be true?

All electricians are union members
All union members are electricians
No electricians are union members
Some electricians may be union members (Correct answer)

Correct answer: Some electricians may be union members

Since some tradespeople are union members and all electricians are tradespeople, it is possible but not certain that some electricians are union members.

Question 50: What must be done before drilling through a wall in an existing structure?

Apply for a permit first
Turn off all nearby circuits only
Check for hidden wiring, pipes, and structural members (Correct answer)
Contact the architect

Correct answer: Check for hidden wiring, pipes, and structural members

Before drilling, workers must locate hidden wiring, plumbing, and structural elements using stud finders or detectors to prevent damage and injury.

Question 51: When two shafts must transmit power at a slight angle to each other, which coupling is used?

Rigid coupling
Flange coupling
Sleeve coupling
Universal joint (U-joint) (Correct answer)

Correct answer: Universal joint (U-joint)

A universal joint allows power transmission between shafts that are not perfectly aligned or are at an angle to each other.

Question 52: The NEC requires that all 15A and 20A 125V receptacles in dwelling unit bathrooms be:

Arc Fault protected
On a dedicated circuit
GFCI protected (Correct answer)
Tamper resistant only

Correct answer: GFCI protected

NEC Section 210.8 requires GFCI protection for all 15A and 20A 125V receptacles in bathroom areas of dwelling units.

Question 53: What does a time-delay relay accomplish in a motor control circuit?

It measures the elapsed running time of the motor for maintenance logs
It introduces a timed interval before allowing a control action to occur (Correct answer)
It delays power to prevent voltage spikes at motor startup
It permanently opens the circuit after a preset time has elapsed

Correct answer: It introduces a timed interval before allowing a control action to occur

A time-delay relay waits for a preset time interval before opening or closing its contacts, which is useful for sequencing starters or controlling transition timing.

Question 54: A conduit runs from the bottom-left corner of a wall to the top-right corner. The wall is 8 feet wide and 10 feet tall. What is the approximate length of the conduit?

9.5 feet
15 feet
12.8 feet (Correct answer)
18 feet

Correct answer: 12.8 feet

Using the Pythagorean theorem: √(8² + 10²) = √(64 + 100) = √164 ≈ 12.8 feet.

Question 55: What is the typical control circuit voltage used in many industrial motor control panels?

120V AC (Correct answer)
480V AC
240V AC
24V DC

Correct answer: 120V AC

120V AC is the most common control circuit voltage in industrial motor control panels, supplied through a control transformer from the 480V power circuit.

Question 56: A coding pattern assigns A=1, B=2, C=3, D=4, E=5. What does the code 3-1-2-3-5 decode to?

CABCD
CABCE (Correct answer)
BCADE
ABCDE

Correct answer: CABCE

Mapping each number: 3=C, 1=A, 2=B, 3=C, 5=E — the decoded message is CABCE.

Question 57: What is the primary purpose of a magnetic motor starter?

To automatically start and stop a motor while providing overload protection (Correct answer)
To regulate the speed of a motor during operation
To convert AC power to DC power for motor use
To manually disconnect power from the motor

Correct answer: To automatically start and stop a motor while providing overload protection

A magnetic motor starter combines a contactor for switching with an overload relay for protection, allowing automatic control of a motor.

Question 58: Which statement correctly completes the analogy? Ammeter : Current :: Voltmeter : _

Power
Frequency
Voltage (Correct answer)
Resistance

Correct answer: Voltage

An ammeter measures current just as a voltmeter measures voltage.

Question 59: A job budget is $18,000. After purchasing materials for $7,450 and paying labor of $6,875, what percentage of the budget remains?

20.4% (Correct answer)
21.5%
22.6%
19.3%

Correct answer: 20.4%

Spent = $14,325; remaining = $3,675; $3,675 ÷ $18,000 ≈ 20.4%.

Question 60: What is the purpose of Personal Protective Equipment (PPE) on an electrical job site?

To comply with insurance policies
To identify workers by trade
To satisfy union requirements only
To protect workers from injuries and hazards (Correct answer)

Correct answer: To protect workers from injuries and hazards

PPE such as gloves, hard hats, and safety glasses protects workers from electrical, physical, and environmental hazards.

Question 61: What does ANSI stand for?

Authorized National Standards Index
American National Safety Institute
Association of National Safety Inspectors
American National Standards Institute (Correct answer)

Correct answer: American National Standards Institute

ANSI (American National Standards Institute) coordinates the development of voluntary consensus standards for products and processes in the US.

Question 62: What does it mean when an apprentice 'advances to the next period' in their training?

They received a pay raise from their employer
They were promoted to foreman
They have completed the required hours and coursework to move to the next year of the apprenticeship (Correct answer)
They passed the journeyman licensing exam

Correct answer: They have completed the required hours and coursework to move to the next year of the apprenticeship

Advancing to the next period means the apprentice has fulfilled the OJT hours and RTI requirements for their current year and is approved to continue to the next level.

Question 63: What does EMF stand for in electrical theory?

Electrical Magnetic Frequency
Electromotive Force (Correct answer)
Electron Motion Factor
Electric Measurement Figure

Correct answer: Electromotive Force

EMF (Electromotive Force) is the energy per unit charge that drives current through a circuit, measured in volts.

Question 64: What is the primary function of a Variable Frequency Drive (VFD)?

To protect the motor from ground faults and short circuits
To control motor speed by varying the frequency and voltage of the power supply (Correct answer)
To provide backup power to a motor during a power outage
To convert single-phase power to three-phase for motor use

Correct answer: To control motor speed by varying the frequency and voltage of the power supply

A VFD controls motor speed and torque by varying the frequency and voltage of the electrical power supplied to the motor.

Question 65: When is a GFCI outlet required by the NEC?

Anywhere a 240V outlet is installed
In bathrooms, kitchens, garages, and outdoor locations (Correct answer)
Only in hospital settings
Only in commercial buildings

Correct answer: In bathrooms, kitchens, garages, and outdoor locations

The NEC requires GFCI protection in areas where water and electricity may come into contact, including bathrooms, kitchens, and outdoor locations.

Question 66: What is the unit of electrical resistance?

Ohm (Correct answer)
Watt
Volt
Ampere

Correct answer: Ohm

The ohm (Ω) is the standard unit of electrical resistance in the International System of Units.

Question 67: A crew installs 180 light fixtures over 5 days with 3 workers. How many fixtures does each worker install per day on average?

10
12 (Correct answer)
11
13

Correct answer: 12

180 ÷ 5 = 36 per day total; 36 ÷ 3 = 12 per worker per day.

Question 68: What is 'plugging' in the context of motor control?

Inserting a plug-in contactor module into a motor control center
Stopping a motor quickly by momentarily reversing the phase connections while the motor is still running (Correct answer)
Connecting additional loads to a motor control panel bus
Testing motor circuit continuity with a plug-type test instrument

Correct answer: Stopping a motor quickly by momentarily reversing the phase connections while the motor is still running

Plugging stops a motor quickly by briefly applying reversed phase sequence while the motor is still rotating, which creates a strong braking torque opposing the rotation.

Question 69: What is a 'fish tape' used for in electrical installation?

Measuring conduit lengths
Taping wire splices
Pulling wire through conduit or walls (Correct answer)
Sealing conduit ends from moisture

Correct answer: Pulling wire through conduit or walls

A fish tape is a long flexible steel or fiberglass tape used to pull conductors through conduit or through wall cavities.

Question 70: What does the term 'qualified person' mean in the context of NFPA 70E?

A person with a college degree in engineering
Any licensed electrician
Anyone with a high school diploma
One who has skills and knowledge of electrical equipment construction and operation (Correct answer)

Correct answer: One who has skills and knowledge of electrical equipment construction and operation

A 'qualified person' under NFPA 70E is one trained and knowledgeable about electrical equipment and hazards associated with specific tasks.

Question 71: As seen in the illustration, three identically sized balls made of the materials K, L, and M are floating in the water. The items are being acted upon by buoyant forces FK, FL, and FM. Which of the aforementioned statements about these forces is true?

Fb (L) > Fb (M) > Fb (K)
None of the above
Fb (K) = Fb (L) = Fb (M)
Fb (K) > Fb (M) > Fb (L) (Correct answer)

Correct answer: Fb (K) > Fb (M) > Fb (L)

By Archimedes' principle, a floating object's buoyant force equals its own weight, which equals the weight of the water it displaces. Since the three balls are the same size but made of different materials, the densest (heaviest) ball sinks deepest and displaces the most water, giving it the largest buoyant force — so the order is K > M > L. The forces aren't equal because the balls have different weights.

Question 72: In spatial reasoning, what does 'congruent' mean?

Having the same shape but different size
Being parallel
Being a mirror image
Having the same shape and size (Correct answer)

Correct answer: Having the same shape and size

Congruent figures have exactly the same shape and size, though they may be oriented differently.

Question 73: A reduced voltage starter (soft starter) is primarily used to:

Provide variable speed control throughout the motor's full operating range
Permanently reduce the operating voltage of the motor to save energy
Limit inrush current and mechanical shock during motor starting (Correct answer)
Step up the voltage for high-horsepower motor applications

Correct answer: Limit inrush current and mechanical shock during motor starting

Reduced voltage starters limit the high inrush current and mechanical torque shock that occur when a large motor is started directly across the line.

Question 74: The electrical code requirement to bond metal conduit ensures:

Faster installation
Lower resistance for fault current to return to source (Correct answer)
Increased wire pulling ease
Higher ampacity ratings

Correct answer: Lower resistance for fault current to return to source

Bonding metal conduit ensures a low-impedance fault-current path back to the source so overcurrent devices will trip quickly during a fault.

Question 75: In a motor control circuit, a normally open (NO) contact is one that:

Is permanently connected to prevent circuit interruption
Allows current to flow only when the device is energized or actuated (Correct answer)
Is always in the closed position during normal operation
Opens when the coil is energized

Correct answer: Allows current to flow only when the device is energized or actuated

A normally open contact has an open circuit in its de-energized (normal) state and only closes to allow current when the coil is energized or the device is actuated.

Question 76: Which class of fire extinguisher is rated for electrical fires?

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

Correct answer: Class C

Class C fire extinguishers use non-conductive agents suitable for electrical equipment fires, preventing shock to the user.

Question 77: What is the purpose of an equipment grounding conductor (EGC)?

To carry normal load current
To bond neutral to ground at every outlet
To provide a safe path for fault current back to the source (Correct answer)
To reduce voltage drop

Correct answer: To provide a safe path for fault current back to the source

The EGC provides a low-impedance path for fault current to return to the source so the overcurrent device will operate and clear the fault.

Question 78: What is the function of a thermal overload relay in a motor starter?

To increase motor speed during heavy load conditions
To reverse the direction of motor rotation automatically
To regulate the voltage supplied to the motor windings
To disconnect the motor if it draws excessive current for an extended period (Correct answer)

Correct answer: To disconnect the motor if it draws excessive current for an extended period

A thermal overload relay protects the motor from damage by opening the control circuit if the motor draws more current than its rated ampacity for too long.

Question 79: Which sentence is written most clearly and correctly?

The tools, which was left in the truck, are now missing.
Having finished the job, the equipment was packed by the crew.
The crew completed the installation and then secured all equipment. (Correct answer)
The installation it was completed by the crew on time.

Correct answer: The crew completed the installation and then secured all equipment.

Option C has a clear subject 'the crew,' correct verb agreement, and no dangling modifier.

Question 80: In a reversing motor starter, what prevents both forward and reverse contactors from energizing simultaneously?

A thermal overload relay sized for both directions of rotation
A double-pole selector switch on the control panel face
Mechanical and electrical interlocking between the two contactors (Correct answer)
A time-delay relay set for a 30-second interval

Correct answer: Mechanical and electrical interlocking between the two contactors

Both mechanical interlocks (physical blocks between contactors) and electrical interlocks (NC auxiliary contacts in each other's coil circuit) prevent simultaneous energization that would cause a phase-to-phase short circuit.

Question 81: What are the differences between gear 3's rotational direction and speed (angular velocity) and gear 1's?

None of the above
Gear 3 rotates faster and in the opposite direction to gear 1
Gear 3 rotates slower than gear 1 and both rotate in the same direction (Correct answer)
Both gears revolve at the same angular velocity and in the same direction

Correct answer: Gear 3 rotates slower than gear 1 and both rotate in the same direction

Connected through an idler gear (gear 2), gears 1 and 3 turn in the same direction. Because gear 3 is the larger gear, the gear ratio makes it rotate slower than gear 1. So gear 3 is both slower and turning the same way — not equal in speed and not opposite in direction.

Question 82: A piece of conduit is bent at a 45-degree angle. If the two straight sections are each 5 feet long, what is the total length of conduit used?

10 feet (Correct answer)
8.5 feet
7.07 feet
12 feet

Correct answer: 10 feet

The total conduit length is the sum of both straight sections: 5 + 5 = 10 feet.

Question 83: The maximum number of conductors permitted in a standard 4-inch square junction box (1.5 inch deep) when using #12 AWG conductors is determined by:

The number of knockouts in the box
Local code amendments only
The physical size of the cover plate
NEC fill calculations based on conductor volume allowances (Correct answer)

Correct answer: NEC fill calculations based on conductor volume allowances

NEC Article 314 provides box fill calculations using cubic inch volumes per conductor size to ensure conductors are not overcrowded in boxes.

Question 84: If a piece of wire is bent into a perfect square with each side 6 inches long, what was the original length of the wire?

12 inches
36 inches
18 inches
24 inches (Correct answer)

Correct answer: 24 inches

The perimeter of a square is 4 × side = 4 × 6 = 24 inches, which equals the wire length used.

Question 85: What is the function of a phase rotation meter (phase sequence tester)?

Tests insulation on three-phase conductors
Measures total harmonic distortion
Determines the sequence (A-B-C or A-C-B) in which phases reach their peak voltages (Correct answer)
Checks if voltage is balanced across phases

Correct answer: Determines the sequence (A-B-C or A-C-B) in which phases reach their peak voltages

A phase rotation meter identifies whether a three-phase system rotates in the correct sequence (A-B-C), which is critical for motor direction and power quality.

Question 86: On a blueprint, what does a solid thick line typically represent?

A dimension line
A center line
A visible edge or wall (Correct answer)
A hidden feature

Correct answer: A visible edge or wall

Solid thick lines in technical drawings represent visible edges, surfaces, or walls of the object.

Question 87: What is the effect of increasing temperature on most conductors?

Resistance decreases
Resistance increases (Correct answer)
Conductance increases
Resistance stays the same

Correct answer: Resistance increases

In most conductors, higher temperatures increase atomic vibration, impeding electron flow and increasing resistance.

Question 88: Which shape is the odd one out: right triangle, equilateral triangle, isosceles triangle, circle?

Circle (Correct answer)
Right triangle
Equilateral triangle
Isosceles triangle

Correct answer: Circle

All triangles are polygons with three sides; a circle has no sides or angles, making it the odd one out.

Question 89: Before working on an electrical panel, what should an electrician always do first?

Turn off all lights in the area
Notify the supervisor
De-energize and verify the circuit is dead with a meter (Correct answer)
Put on rubber gloves

Correct answer: De-energize and verify the circuit is dead with a meter

The first step is always to de-energize the circuit and verify it is dead using a properly rated voltage tester before touching any conductors.

Question 90: Why is it important that control components be connected in the secondary (control) circuit rather than directly in the primary (load) circuit?

Using lower voltage in the control circuit improves safety and allows smaller wire gauges (Correct answer)
Control wiring must always operate at the same voltage as the motor nameplate rating
Control components are rated for higher voltages than load-side components
Primary circuit components are immune to overload conditions

Correct answer: Using lower voltage in the control circuit improves safety and allows smaller wire gauges

Isolating control components in a lower-voltage secondary circuit (typically 120V) reduces shock hazard for workers and allows the use of smaller, less expensive control conductors.

Question 91: A wye-delta (star-delta) starter is used primarily for:

Reducing starting current by initially connecting the motor windings in wye, then switching to delta for full-speed operation (Correct answer)
Converting three-phase motors to operate on a single-phase supply
Providing continuous variable speed control for large induction motors
Providing dynamic braking to stop a large motor quickly and safely

Correct answer: Reducing starting current by initially connecting the motor windings in wye, then switching to delta for full-speed operation

A wye-delta starter reduces starting current to approximately one-third of across-the-line values by first connecting windings in wye, then transitioning to delta for normal operation.

Question 92: Three-phase power is most commonly used in:

Industrial motors and machinery (Correct answer)
Phone chargers
Household appliances
Residential lighting

Correct answer: Industrial motors and machinery

Three-phase power is used in industrial settings because it efficiently powers large motors and machinery.

Question 93: What does a torque wrench measure?

The hardness of the bolt material
The thread pitch of a fastener
The rotational force applied to a fastener (Correct answer)
The speed of fastener rotation

Correct answer: The rotational force applied to a fastener

A torque wrench measures and limits the rotational force (torque) applied when tightening fasteners to a specified value.

Question 94: An electrical worker discovers a circuit breaker that trips repeatedly. The safest first action is to:

Investigate the cause of the overload or fault (Correct answer)
Replace the breaker with a larger one
Ignore it and use another circuit
Tape the breaker in the ON position

Correct answer: Investigate the cause of the overload or fault

A repeatedly tripping breaker indicates an overload, short circuit, or ground fault that must be identified and corrected before restoring power.

Question 95: What is the minimum burial depth for underground feeder cable (UF) under a driveway in residential applications?

6 inches
12 inches
18 inches
24 inches (Correct answer)

Correct answer: 24 inches

The NEC requires UF cable to be buried at least 24 inches deep under driveways subject to vehicle traffic.

Question 96: In NFPA 70E, an 'arc flash boundary' is defined as the distance at which:

Equipment must be de-energized
Voltage drops to zero
PPE is no longer required
A worker would receive a second-degree burn from an arc flash (Correct answer)

Correct answer: A worker would receive a second-degree burn from an arc flash

The arc flash boundary is the distance from an arc source at which a worker could receive a second-degree burn (1.2 cal/cm²) without protection.

Question 97: Which number is next in the pattern: 100, 90, 81, 73, 66, _?

55
60 (Correct answer)
58
62

Correct answer: 60

The differences decrease by one each time: -10, -9, -8, -7, -6, so the next number is 66 - 6 = 60.

Question 98: A rectangular electrical panel cover is 20 inches tall and 14 inches wide. What is its perimeter?

280 inches
68 inches (Correct answer)
34 inches
56 inches

Correct answer: 68 inches

Perimeter = 2 × (length + width) = 2 × (20 + 14) = 2 × 34 = 68 inches.

Question 99: What information does a 'lighting fixture schedule' on a set of drawings provide?

The wiring method for each fixture
HVAC load calculations
The panel location for each fixture
A table listing each fixture type, manufacturer, model, watts, and mounting details (Correct answer)

Correct answer: A table listing each fixture type, manufacturer, model, watts, and mounting details

A lighting fixture schedule is a reference table that cross-references fixture type symbols on the plan to specific product specifications and mounting details.

Question 100: What is the minimum approach distance a qualified worker must maintain from energized parts at 480V?

As specified by NFPA 70E arc flash boundary (Correct answer)
Avoid contact without PPE
No minimum required at 480V
12 inches regardless of PPE

Correct answer: As specified by NFPA 70E arc flash boundary

NFPA 70E establishes approach boundaries and PPE requirements based on arc flash hazard analysis at specific voltages.

EIAT - Elevator Industry Aptitude Test (NEIEP)

The Elevator Industry Aptitude Test (EIAT), developed by NEIEP for the IUEC, screens candidates for elevator mechanic apprenticeships by assessing spatial reasoning, electrical theory, safety and code knowledge, and motor controls proficiency.

Questions

35 min

Time Limit

70%

To Pass

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Exam Rules

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No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds

These practice questions were written with AI tools. They are not real exam questions. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

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