NEIEP 600 FINAL EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026
Q&A |LATEST EXAM UPDATE 2026/2027
SECTION ONE: QUESTIONS 1-100
Question 1
When performing a load test on a traction elevator, what is the primary purpose of measuring the motor
current?
A. To verify the brake holding torque
B. To ensure the motor is not overloaded and operates within its nameplate rating
C. To check the condition of the motor bearings
D. To calibrate the overspeed governor
🟢B
🔴 RATIONALE: Measuring motor current during a load test is critical to confirm the motor is not drawing
excessive current, which would indicate an overload condition or a fault, ensuring it operates within its design
specifications for safety and longevity.
Question 2
According to the ASME A17.1/CSA B44 Safety Code for Elevators and Escalators, what is the minimum required
clearance between the top of the car and the overhead structure when the car is at its highest point of travel,
with the buffer fully compressed?
A. 12 inches
B. 24 inches
C. 36 inches
D. 48 inches
🟢C
,🔴 RATIONALE: ASME A17.1 specifies a minimum overhead clearance of 36 inches (or as otherwise required by
the code) to ensure adequate space for personnel working on the top of the car and to prevent crushing
hazards.
Question 3
A hydraulic elevator is experiencing a slow, creeping descent when parked at a floor. The most likely cause is:
A. A faulty door interlock
B. A leaking packing in the cylinder
C. A defective check valve or a leaking control valve
D. Low hydraulic fluid viscosity due to temperature
🟢C
🔴 RATIONALE: A slow, creeping descent when the car is parked is a classic symptom of a leaking check valve
or a worn/contaminated control valve. This allows fluid to bypass the valve and return to the reservoir, causing
the car to drift downward.
Question 4
What is the function of the phase reversal relay in an elevator motor control circuit?
A. To protect the motor from overcurrent
B. To ensure the motor runs in the correct direction
C. To disconnect power during a low-voltage condition
D. To provide a warning for high motor temperature
🟢B
🔴 RATIONALE: The phase reversal relay monitors the phase sequence of the incoming three-phase power. If
two phases are reversed, the motor would run in the wrong direction, so the relay prevents the elevator from
starting to avoid a hazardous condition.
,Question 5
Which of the following is the MOST critical safety device for preventing a car from overspeeding in the
downward direction?
A. The final limit switch
B. The governor and safety brake system
C. The door interlock system
D. The buffer
🟢B
🔴 RATIONALE: The governor and safety brake system are the primary safety devices designed to mechanically
engage the guide rails and stop the car if it exceeds its rated speed (typically 115% of rated speed) in the
downward direction.
Question 6
During a routine inspection, you find that the door operator belt is frayed. What is the immediate, proper
course of action?
A. Document the finding for future repair
B. Apply a temporary adhesive to the belt
C. Place the elevator out of service and replace the belt
D. Reduce the door speed to minimize stress on the belt
🟢C
🔴 RATIONALE: A frayed door operator belt poses an immediate safety and operational hazard. It is a critical
component, and if it breaks, the doors could fail to operate properly. The elevator must be taken out of service
and the belt replaced immediately.
Question 7
What is the primary function of a machine room's ventilation system?
, A. To cool the occupants in the room
B. To prevent the buildup of explosive gases
C. To dissipate heat generated by the motor and controller
D. To maintain a positive air pressure
🟢C
🔴 RATIONALE: The primary purpose of ventilation in a machine room is to remove the heat generated by the
elevator machinery, especially the motor, controller, and drive system, to ensure they operate within their
allowable temperature ranges and prevent premature failure.
Question 8
The oil in a hydraulic elevator reservoir is found to be milky and contains air bubbles. This indicates:
A. The oil is too thick
B. The oil is overheating
C. The oil is contaminated with water
D. The oil level is too high
🟢C
🔴 RATIONALE: Milky or cloudy hydraulic fluid is a strong indication of water contamination. Water can enter
the system through a leaking cylinder seal or a breather cap. This contamination can degrade the oil and
damage system components.
Question 9
A "machine-room-less" (MRL) elevator requires unique safety considerations for maintenance personnel. Which
of the following is a primary safety concern in an MRL installation?
A. Lack of adequate lighting
B. Access to the controller
C. The absence of a dedicated machine room requires designated working spaces and safe methods for
Q&A |LATEST EXAM UPDATE 2026/2027
SECTION ONE: QUESTIONS 1-100
Question 1
When performing a load test on a traction elevator, what is the primary purpose of measuring the motor
current?
A. To verify the brake holding torque
B. To ensure the motor is not overloaded and operates within its nameplate rating
C. To check the condition of the motor bearings
D. To calibrate the overspeed governor
🟢B
🔴 RATIONALE: Measuring motor current during a load test is critical to confirm the motor is not drawing
excessive current, which would indicate an overload condition or a fault, ensuring it operates within its design
specifications for safety and longevity.
Question 2
According to the ASME A17.1/CSA B44 Safety Code for Elevators and Escalators, what is the minimum required
clearance between the top of the car and the overhead structure when the car is at its highest point of travel,
with the buffer fully compressed?
A. 12 inches
B. 24 inches
C. 36 inches
D. 48 inches
🟢C
,🔴 RATIONALE: ASME A17.1 specifies a minimum overhead clearance of 36 inches (or as otherwise required by
the code) to ensure adequate space for personnel working on the top of the car and to prevent crushing
hazards.
Question 3
A hydraulic elevator is experiencing a slow, creeping descent when parked at a floor. The most likely cause is:
A. A faulty door interlock
B. A leaking packing in the cylinder
C. A defective check valve or a leaking control valve
D. Low hydraulic fluid viscosity due to temperature
🟢C
🔴 RATIONALE: A slow, creeping descent when the car is parked is a classic symptom of a leaking check valve
or a worn/contaminated control valve. This allows fluid to bypass the valve and return to the reservoir, causing
the car to drift downward.
Question 4
What is the function of the phase reversal relay in an elevator motor control circuit?
A. To protect the motor from overcurrent
B. To ensure the motor runs in the correct direction
C. To disconnect power during a low-voltage condition
D. To provide a warning for high motor temperature
🟢B
🔴 RATIONALE: The phase reversal relay monitors the phase sequence of the incoming three-phase power. If
two phases are reversed, the motor would run in the wrong direction, so the relay prevents the elevator from
starting to avoid a hazardous condition.
,Question 5
Which of the following is the MOST critical safety device for preventing a car from overspeeding in the
downward direction?
A. The final limit switch
B. The governor and safety brake system
C. The door interlock system
D. The buffer
🟢B
🔴 RATIONALE: The governor and safety brake system are the primary safety devices designed to mechanically
engage the guide rails and stop the car if it exceeds its rated speed (typically 115% of rated speed) in the
downward direction.
Question 6
During a routine inspection, you find that the door operator belt is frayed. What is the immediate, proper
course of action?
A. Document the finding for future repair
B. Apply a temporary adhesive to the belt
C. Place the elevator out of service and replace the belt
D. Reduce the door speed to minimize stress on the belt
🟢C
🔴 RATIONALE: A frayed door operator belt poses an immediate safety and operational hazard. It is a critical
component, and if it breaks, the doors could fail to operate properly. The elevator must be taken out of service
and the belt replaced immediately.
Question 7
What is the primary function of a machine room's ventilation system?
, A. To cool the occupants in the room
B. To prevent the buildup of explosive gases
C. To dissipate heat generated by the motor and controller
D. To maintain a positive air pressure
🟢C
🔴 RATIONALE: The primary purpose of ventilation in a machine room is to remove the heat generated by the
elevator machinery, especially the motor, controller, and drive system, to ensure they operate within their
allowable temperature ranges and prevent premature failure.
Question 8
The oil in a hydraulic elevator reservoir is found to be milky and contains air bubbles. This indicates:
A. The oil is too thick
B. The oil is overheating
C. The oil is contaminated with water
D. The oil level is too high
🟢C
🔴 RATIONALE: Milky or cloudy hydraulic fluid is a strong indication of water contamination. Water can enter
the system through a leaking cylinder seal or a breather cap. This contamination can degrade the oil and
damage system components.
Question 9
A "machine-room-less" (MRL) elevator requires unique safety considerations for maintenance personnel. Which
of the following is a primary safety concern in an MRL installation?
A. Lack of adequate lighting
B. Access to the controller
C. The absence of a dedicated machine room requires designated working spaces and safe methods for
