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

Question 1: Which transformation of a capital letter 'R' would make it look most like a mirrored image?

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

Correct answer: Flip horizontally

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

Question 2: What is the unit of electrical current?

Ohm
Watt
Ampere (Correct answer)
Volt

Correct answer: Ampere

Electrical current is measured in amperes (amps), named after physicist André-Marie Ampère.

Question 3: A conduit layout drawing shows a top-down view. A section labeled 'UP' with dashes indicates what?

A future conduit installation
Conduit running toward the viewer
Conduit running along the floor
Conduit running vertically upward through the ceiling (Correct answer)

Correct answer: Conduit running vertically upward through the ceiling

In electrical drawings, a dashed line labeled 'UP' indicates conduit rising vertically through the ceiling plane.

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

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

Correct answer: 12.6 inches

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

Question 5: 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?

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

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

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

Correct answer: 24 inches

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

Question 7: What is the function of a control transformer in a motor control panel?

To convert three-phase power into single-phase for small control devices
To step down the line voltage to a lower, safer control circuit voltage such as 120V (Correct answer)
To isolate the motor windings from the power supply during safety testing
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 8: What does ANSI stand for?

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

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 9: How many inches are in 7 feet 6 inches?

90 inches (Correct answer)
84 inches
96 inches
76 inches

Correct answer: 90 inches

7 feet × 12 in/ft = 84 inches, plus 6 inches = 90 inches total.

Question 10: In motor control terminology, what does 'JOG' mode refer to?

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

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 11: What is a job hazard analysis (JHA)?

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

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 12: 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
Sequence of events
Addition of parallel benefits (Correct answer)
Cause and effect

Correct answer: Addition of parallel benefits

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

Question 13: The term 'ground' in an electrical circuit refers to:

The neutral wire only
The highest voltage point
A reference point at zero potential (Correct answer)
The phase conductor

Correct answer: A reference point at zero potential

Ground (earth) serves as a reference point at zero electrical potential and provides a safe path for fault current.

Question 14: In a ladder logic diagram used for motor control, what does a normally closed (NC) contact symbol represent?

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

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 15: A document uses the phrase 'as applicable.' In the sentence 'Install bonding jumpers, conduit supports, and expansion fittings, as applicable,' what does 'as applicable' imply?

The installer may choose which items to omit for convenience.
All three items are always required.
Only items that are relevant to the specific installation conditions should be installed. (Correct answer)
The items are optional and rarely needed.

Correct answer: Only items that are relevant to the specific installation conditions should be installed.

'As applicable' means install whichever items are relevant based on the conditions of the specific job.

Question 16: What is the primary purpose of the EIAT (Electrical Industry Aptitude Test)?

To assess candidates' aptitude for the electrical apprenticeship program (Correct answer)
To test electricians for safety compliance
To qualify workers for master electrician licensing
To certify journeyman electricians

Correct answer: To assess candidates' aptitude for the electrical apprenticeship program

The EIAT evaluates candidates' mathematical and reading abilities to determine their readiness for the IBEW electrical apprenticeship program.

Question 17: 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 components are rated for higher voltages than load-side components
Primary circuit components are immune to overload conditions
Control wiring must always operate at the same voltage as the motor nameplate rating

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 18: What does a capacitor store?

Current
Magnetic energy
Electrical charge (Correct answer)
Resistance

Correct answer: Electrical charge

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

Question 19: In a 3-wire control circuit, the purpose of the holding (seal-in) contact is to:

Prevent the motor from starting without a valid start signal
Limit the inrush current during motor starting
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 20: Which word does NOT belong: hammer, screwdriver, wrench, voltmeter, pliers?

Pliers
Hammer
Screwdriver
Voltmeter (Correct answer)

Correct answer: Voltmeter

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

Question 21: What is the minimum approach distance a qualified worker must maintain from energized parts at 480V?

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

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.

Question 22: What is the unit of electrical resistance?

Ampere
Watt
Ohm (Correct answer)
Volt

Correct answer: Ohm

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

Question 23: 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
Cone
Sphere

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 24: According to OSHA, what is an 'assured equipment grounding conductor program'?

The NEC grounding requirements for commercial buildings
A written safety program for inspecting and testing grounding of power tools on construction sites (Correct answer)
A training program for apprentices
A union certification for ground installers

Correct answer: A written safety program for inspecting and testing grounding of power tools on construction sites

OSHA allows this documented program as an alternative to GFCI protection on construction sites, requiring regular inspections of tools and cords.

Question 25: Personal Protective Equipment (PPE) for electrical work includes:

Hard hat and safety glasses only
Steel-toed boots only
Latex gloves and goggles
Insulated gloves, arc flash suit, face shield, and safety footwear (Correct answer)

Correct answer: Insulated gloves, arc flash suit, face shield, and safety footwear

Electrical PPE must protect against both shock and arc flash hazards, requiring rated insulated gloves, arc-rated clothing, and face protection.

Question 26: A wye-delta (star-delta) starter is used primarily for:

Converting three-phase motors to operate on a single-phase supply
Providing continuous variable speed control for large induction motors
Reducing starting current by initially connecting the motor windings in wye, then switching to delta for full-speed operation (Correct answer)
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 27: Which of the following best describes a 'section view' in an electrical blueprint?

A front-facing elevation
A cutaway view showing the interior of a structure (Correct answer)
A top-down aerial view
A perspective 3D drawing

Correct answer: A cutaway view showing the interior of a structure

A section view cuts through the structure to reveal internal details not visible from the outside.

Question 28: The NEC requires that all 15A and 20A 125V receptacles in dwelling unit bathrooms be:

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

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 29: Which OSHA standard specifically covers electrical safety in the workplace?

29 CFR 1910.95
29 CFR 1926.501
29 CFR 1910.333 (Correct answer)
29 CFR 1910.147

Correct answer: 29 CFR 1910.333

29 CFR 1910.333 covers electrical safety-related work practices for general industry under OSHA standards.

Question 30: What does the term 'qualified person' mean in the context of NFPA 70E?

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

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

To convert single-phase power to three-phase for motor use
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

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 32: Which of the following completes the analogy? Ohm : Resistance :: Volt : _

Power
Frequency
Voltage (Correct answer)
Current

Correct answer: Voltage

Ohm is the unit of resistance, and Volt is the unit of voltage (electrical potential difference).

Question 33: On a mechanical or electrical plan, what does 'EWC' typically stand for?

Earthed Wire Circuit
External Wire Connector
Electric Water Cooler (Correct answer)
Electrical Wall Connection

Correct answer: Electric Water Cooler

EWC stands for Electric Water Cooler, a common abbreviation on electrical plans for designating drinking fountain/water cooler circuits.

Question 34: Which material is the best electrical conductor?

Copper
Aluminum
Iron
Silver (Correct answer)

Correct answer: Silver

Silver has the highest electrical conductivity of all metals, though copper is more commonly used due to cost.

Question 35: As an apprentice, what is your responsibility when you are unsure how to safely complete a task?

Complete the task as best you can and report issues later
Stop work and ask your journeyman or foreman for guidance (Correct answer)
Contact the JATC office directly
Skip the task and move on to another

Correct answer: Stop work and ask your journeyman or foreman for guidance

Apprentices must always stop and seek guidance from their supervising journeyman or foreman when uncertain — proceeding blindly can result in injury or property damage.

Question 36: The sequence is: A1, B2, C3, D4, _. What comes next?

D5
F5
E4
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 37: What is the typical control circuit voltage used in many industrial motor control panels?

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

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

To regulate the speed of a motor during operation
To convert AC power to DC power for motor use
To automatically start and stop a motor while providing overload protection (Correct answer)
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 39: In a two-speed motor control circuit using a single stator winding (consequent pole method), what determines the two speeds?

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

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

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

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

Yellow
Red (Correct answer)
Orange
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 42: 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?

ABCDE
CABCE (Correct answer)
CABCD
BCADE

Correct answer: CABCE

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

Question 43: What is the purpose of an equipment grounding conductor (EGC)?

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

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 44: What does EMF stand for in electrical theory?

Electromotive Force (Correct answer)
Electromagnetic Field
Electron Motion Factor
Electrical Magnetic Force

Correct answer: Electromotive Force

EMF (Electromotive Force) is the energy provided by a source per unit charge and is measured in volts.

Question 45: How many hours of on-the-job training (OJT) are typically required to complete an IBEW inside wireman apprenticeship?

2,000 hours
8,000 hours (Correct answer)
6,000 hours
4,000 hours

Correct answer: 8,000 hours

A typical IBEW inside wireman apprenticeship requires approximately 8,000 hours (about 5 years) of on-the-job training.

Question 46: An inclined plane is 10 feet long and rises 2 feet. A 500 lb crate is pushed up the ramp. Approximately how much force is required (ignoring friction)?

50 lb
500 lb
250 lb
100 lb (Correct answer)

Correct answer: 100 lb

Mechanical advantage = length/height = 10/2 = 5, so force = 500/5 = 100 lb.

Question 47: A V-belt drive slips when the load is too high. What is the most effective solution?

Reduce the driven pulley diameter
Increase the rotational speed of the motor
Increase belt tension or install a wider/higher-capacity belt (Correct answer)
Lubricate the belt with oil

Correct answer: Increase belt tension or install a wider/higher-capacity belt

Slipping means the belt cannot transmit the required torque; increasing tension or using a higher-capacity belt restores grip.

Question 48: Which statement correctly completes the analogy? Ammeter : Current :: Voltmeter : _

Frequency
Power
Voltage (Correct answer)
Resistance

Correct answer: Voltage

An ammeter measures current just as a voltmeter measures voltage.

Question 49: What is the purpose of Personal Protective Equipment (PPE) on an electrical job site?

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

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 50: 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
Step up the voltage for high-horsepower motor applications
Limit inrush current and mechanical shock during motor starting (Correct answer)

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

100% of the motor full-load current (FLC)
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)

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

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

Correct answer: 20 hours

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

Question 53: 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)
38 hours
40 hours
39.5 hours

Correct answer: 39 hours

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

Question 54: A transformer is used to:

Store electrical energy
Measure current
Step voltage up or down (Correct answer)
Convert DC to AC

Correct answer: Step voltage up or down

A transformer uses electromagnetic induction to step AC voltage up or down between two or more circuits.

Question 55: In a series of shapes, every third shape is shaded. If there are 15 shapes total, how many are shaded?

5 (Correct answer)
7
4
3

Correct answer: 5

If every third shape is shaded, then 15 ÷ 3 = 5 shapes are shaded.

Question 56: What is the function of a thermal overload relay in a motor starter?

To increase motor speed during heavy load conditions
To regulate the voltage supplied to the motor windings
To reverse the direction of motor rotation automatically
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 57: 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
The main bus compartment where the incoming power feed connects to the MCC
A removable compartment containing the starter, overload relay, and associated components for a single motor circuit (Correct answer)

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 58: Which of the following best describes a contactor as used in motor control?

A mechanical governor that limits motor speed under varying load conditions
An electromagnetically operated switch designed for making and breaking high-current load circuits (Correct answer)
A manually operated disconnect for isolating the motor from the supply
A solid-state device that regulates motor current through phase angle control

Correct answer: An electromagnetically operated switch designed for making and breaking high-current load circuits

A contactor is an electromagnetically actuated switch designed to repeatedly make and break motor load currents under the control of a low-power coil signal.

Question 59: 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 60: If a 3D cube is unfolded into a flat net, how many squares will it contain?

6 (Correct answer)
4
12
8

Correct answer: 6

A cube has 6 faces, so its net always contains exactly 6 squares.

Question 61: When a bolt is tightened, the threads act as which simple machine?

Wedge
Pulley
Lever
Screw (inclined plane wrapped around a cylinder) (Correct answer)

Correct answer: Screw (inclined plane wrapped around a cylinder)

A screw is an inclined plane wrapped around a cylinder; rotating it converts rotational motion into linear clamping force.

Question 62: 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?

3 (Correct answer)
8
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 63: In the sequence 2, 4, 8, 16, 32, what is the next number?

48
64 (Correct answer)
56
36

Correct answer: 64

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

Question 64: A square panel has dimensions of 24 inches × 24 inches. How many 6-inch × 6-inch knockout holes can fit on this panel?

16 (Correct answer)
8
12
24

Correct answer: 16

The panel area is 24×24 = 576 sq inches; each knockout is 6×6 = 36 sq inches; 576/36 = 16 knockouts.

Question 65: If the pattern is ○●○○●○○○●, what is the next symbol?

△
○ (Correct answer)
□
●

Correct answer: ○

The filled circle appears after 1, then 2, then 3 open circles; the next sequence adds 4 open circles, starting with ○.

Question 66: What is a Material Safety Data Sheet (SDS) used for?

To list the prices of materials
To track tool inventory
To document completed work
To communicate hazard information about chemicals used on the job site (Correct answer)

Correct answer: To communicate hazard information about chemicals used on the job site

An SDS (Safety Data Sheet) provides detailed information on the hazards, handling, storage, and emergency measures for chemical substances.

Question 67: 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)
Ignore it and use another circuit
Replace the breaker with a larger one
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 68: When is a GFCI outlet required by the NEC?

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

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 69: Three-phase power is most commonly used in:

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

Correct answer: Industrial motors and machinery

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

Question 70: A centrifugal pump impeller spins faster. What happens to the fluid pressure it produces?

Pressure increases (Correct answer)
Pressure becomes zero
Pressure decreases
Pressure stays the same

Correct answer: Pressure increases

Higher impeller speed imparts more kinetic energy to the fluid, which converts to greater pressure at the pump outlet.

Question 71: A motor uses 6.5 kWh of electricity per hour of operation. How many kWh does it consume in a 40-hour work week?

250 kWh
270 kWh
260 kWh (Correct answer)
240 kWh

Correct answer: 260 kWh

6.5 × 40 = 260 kWh.

Question 72: What is the missing number? 1, 4, 9, 16, __, 36

24
20
30
25 (Correct answer)

Correct answer: 25

The sequence consists of perfect squares: 1², 2², 3², 4², 5², 6² — so the missing number is 5² = 25.

Question 73: What does NEC stand for in the electrical industry?

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

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

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

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 75: What does a torque wrench measure?

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

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

Equilateral triangle
Isosceles triangle
Right triangle
Circle (Correct answer)

Correct answer: Circle

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

Question 77: On a blueprint, what does a solid thick line typically represent?

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

Correct answer: A visible edge or wall

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

Question 78: Before working on an electrical panel, what should an electrician always do first?

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

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 79: Tool A is used before Tool B. Tool B is used before Tool C. Tool D is used after Tool C. Which tool is used second?

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

Correct answer: Tool B

The order is A → B → C → D, so Tool B is used second.

Question 80: Which sections are included in the standard EIAT exam?

General knowledge and writing skills
Algebra and functions, reading comprehension, and mechanical aptitude (Correct answer)
Electrical theory, code knowledge, and math
Safety procedures and blueprint reading

Correct answer: Algebra and functions, reading comprehension, and mechanical aptitude

The EIAT typically includes algebra and mathematical functions, reading comprehension, and mechanical aptitude sections to assess overall aptitude.

Question 81: Which of the following shapes has exactly four lines of symmetry?

Square (Correct answer)
Parallelogram
Rhombus
Rectangle

Correct answer: Square

A square has four lines of symmetry: two through opposite vertices and two through midpoints of opposite sides.

Question 82: What does 'bonding' mean in electrical work?

Securing conduit to the wall
Attaching wires to a panel bus
Connecting metal parts together to ensure electrical continuity and reduce shock risk (Correct answer)
Connecting neutral and ground at a subpanel

Correct answer: Connecting metal parts together to ensure electrical continuity and reduce shock risk

Bonding connects conductive parts together so they are at the same electrical potential, preventing dangerous voltage differences between metal surfaces.

Question 83: What is 'plugging' in the context of motor control?

Testing motor circuit continuity with a plug-type test instrument
Connecting additional loads to a motor control panel bus
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)

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 84: The NEC (National Electrical Code) is published by:

NFPA (Correct answer)
OSHA
ANSI
IEEE

Correct answer: NFPA

The National Electrical Code (NEC) is published by the National Fire Protection Association (NFPA) and updated every three years.

Question 85: Which of the following figures comes closest to the right response? 62 x 14 x 13

9100 (Correct answer)
1500
750
300

Correct answer: 9100

Explanation: We can resolve this issue by making a simple estimation given the wide range of magnitudes of the optional answers provided for this question. We could even attempt to round numbers 14 and 13 to 10 (!). In this situation, we would have the equation: 62 x 10 x 10. 10 x 10 = 100. The result of multiplying 62 by 100 is 6200. This amount is already a good deal higher than the previous three choices. The final result should be significantly higher and somewhere around 9000 as we rounded down 14 and 13 to 10. The right response is 9100.

Question 86: If you rotate a right triangle 90 degrees clockwise, which side becomes the new base?

The shortest side
The side that was horizontal
The hypotenuse
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 87: In a motor control circuit, a normally open (NO) contact is one that:

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

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 88: A memo states: 'Employees are encouraged, but not required, to attend the optional safety seminar on Friday.' An employee does not attend. Has he violated company policy?

No, only if he submits a written excuse in advance.
Yes, if his supervisor instructed him to attend.
Yes, because safety seminars are mandatory for all employees.
No, because attendance is explicitly optional. (Correct answer)

Correct answer: No, because attendance is explicitly optional.

The memo uses 'encouraged, but not required,' which means attendance is voluntary and skipping it is not a policy violation.

Question 89: 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?

18 inches
12 inches
36 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 90: In a pulley system, if you pull the rope 6 feet to raise a load 2 feet, what is the mechanical advantage?

2
12
6
3 (Correct answer)

Correct answer: 3

Mechanical advantage = distance effort moves / distance load moves = 6 ft / 2 ft = 3.

Question 91: Which NEC article primarily covers the installation requirements for motors, motor circuits, and motor controllers?

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

Correct answer: Article 430

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

Question 92: 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
2 inches × 4 inches
4 inches × 6 inches (Correct answer)
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 93: 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?

None of the above
Fb (K) = Fb (L) = Fb (M)
Fb (L) > Fb (M) > Fb (K)
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 94: A GFCI outlet is designed to protect against:

Short circuits
Ground faults and electrocution (Correct answer)
Overloads
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 95: What does NEMA stand for in the context of motor controls?

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

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

11
10
12 (Correct answer)
13

Correct answer: 12

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

Question 97: 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 98: Which class of fire extinguisher is rated for electrical fires?

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

Correct answer: Class C

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

Question 99: Which class of fire extinguisher is safe for electrical fires?

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

Correct answer: Class C

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

Question 100: Which way is the wheel going to turn? (Mark C if neither.)

C
B (Correct answer)
A

Correct answer: B

Explanation: The leftmost two wheels are connected by a band. The band moves in response to the clockwise rotation of the bottom wheel (blue arrow), which in turn causes the top wheel to rotate counterclockwise. The band is crossed, which is why. Due to the rod connecting the two wheels at the top, they both rotate in the same direction. The aforementioned wheel will rotate counterclockwise because it is connected by a straight band to the wheel at the top right.

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.

100

Questions

90 min

Time Limit

70%

To Pass

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