NYC Elevator Mechanic Exam – Full-
Length Practice Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. Which component prevents an elevator car from overspeeding during
descent?
A. Governor
B. Buffer
C. Guide rail
D. Counterweight
Answer: B. Buffer
Rationale: Buffers absorb kinetic energy and stop the car safely if it
descends too far or too fast.
2. What is the primary purpose of the elevator governor?
A. Control door operation
, B. Regulate car speed
C. Activate safety gear
D. Balance counterweight
Answer: C. Activate safety gear
Rationale: The governor trips the safety gear when overspeed is
detected.
3. Which electrical device prevents elevator operation when doors are
open?
A. Door interlock
B. Limit switch
C. Relay
D. Contactor
Answer: A. Door interlock
Rationale: Door interlocks ensure doors are closed and locked before
movement.
4. What type of current is typically used for modern elevator motor
control?
A. Direct current only
B. Alternating current only
C. Variable frequency AC
D. Single-phase AC
Answer: C. Variable frequency AC
, Rationale: VFD-controlled AC motors allow smooth speed control and
efficiency.
5. Which component balances the weight of the elevator car?
A. Buffer
B. Governor
C. Counterweight
D. Sheave
Answer: C. Counterweight
Rationale: The counterweight offsets the car weight to reduce motor
load.
6. What safety device stops the car if hoisting ropes fail?
A. Governor
B. Safety gear
C. Buffer
D. Brake
Answer: B. Safety gear
Rationale: Safety gear grips the guide rails when rope failure or
overspeed occurs.
7. Which code governs elevator installation and maintenance in NYC?
A. OSHA
B. NEC
C. ASME A17.1
D. NFPA 70
, Answer: C. ASME A17.1
Rationale: ASME A17.1 is the Safety Code for Elevators and
Escalators adopted by NYC.
8. What is the function of guide rails?
A. Support doors
B. Guide car and counterweight movement
C. Provide braking force
D. Control speed
Answer: B. Guide car and counterweight movement
Rationale: Guide rails keep the car and counterweight aligned
vertically.
9. Which device supplies emergency power to elevator controls?
A. UPS or standby generator
B. Transformer
C. Rectifier
D. Relay
Answer: A. UPS or standby generator
Rationale: Emergency power ensures safe operation during power
loss.
10. What type of brake is used on elevator machines?
A. Hydraulic brake
B. Magnetic brake
C. Friction shoe brake
Length Practice Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. Which component prevents an elevator car from overspeeding during
descent?
A. Governor
B. Buffer
C. Guide rail
D. Counterweight
Answer: B. Buffer
Rationale: Buffers absorb kinetic energy and stop the car safely if it
descends too far or too fast.
2. What is the primary purpose of the elevator governor?
A. Control door operation
, B. Regulate car speed
C. Activate safety gear
D. Balance counterweight
Answer: C. Activate safety gear
Rationale: The governor trips the safety gear when overspeed is
detected.
3. Which electrical device prevents elevator operation when doors are
open?
A. Door interlock
B. Limit switch
C. Relay
D. Contactor
Answer: A. Door interlock
Rationale: Door interlocks ensure doors are closed and locked before
movement.
4. What type of current is typically used for modern elevator motor
control?
A. Direct current only
B. Alternating current only
C. Variable frequency AC
D. Single-phase AC
Answer: C. Variable frequency AC
, Rationale: VFD-controlled AC motors allow smooth speed control and
efficiency.
5. Which component balances the weight of the elevator car?
A. Buffer
B. Governor
C. Counterweight
D. Sheave
Answer: C. Counterweight
Rationale: The counterweight offsets the car weight to reduce motor
load.
6. What safety device stops the car if hoisting ropes fail?
A. Governor
B. Safety gear
C. Buffer
D. Brake
Answer: B. Safety gear
Rationale: Safety gear grips the guide rails when rope failure or
overspeed occurs.
7. Which code governs elevator installation and maintenance in NYC?
A. OSHA
B. NEC
C. ASME A17.1
D. NFPA 70
, Answer: C. ASME A17.1
Rationale: ASME A17.1 is the Safety Code for Elevators and
Escalators adopted by NYC.
8. What is the function of guide rails?
A. Support doors
B. Guide car and counterweight movement
C. Provide braking force
D. Control speed
Answer: B. Guide car and counterweight movement
Rationale: Guide rails keep the car and counterweight aligned
vertically.
9. Which device supplies emergency power to elevator controls?
A. UPS or standby generator
B. Transformer
C. Rectifier
D. Relay
Answer: A. UPS or standby generator
Rationale: Emergency power ensures safe operation during power
loss.
10. What type of brake is used on elevator machines?
A. Hydraulic brake
B. Magnetic brake
C. Friction shoe brake
