Co Elevator Mechanic Contractor Exam
Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. What is the primary purpose of a governor in a traction elevator
system?
A. To control door operation
B. To monitor hoistway lighting
C. To detect overspeed conditions
D. To provide car leveling
Answer: C
The governor activates the safety mechanism when the elevator exceeds a
predetermined speed, preventing runaway conditions.
2. What component grips the governor rope during an overspeed event
to stop the car?
A. Buffer
B. Terminal switch
C. Counterweight
D. Safety jaws
Answer: D
Safety jaws clamp onto the rails to stop the car or counterweight when the
governor trips.
3. Which type of elevator uses a pump and hydraulic cylinder?
,A. Geared traction
B. Gearless traction
C. MRL traction
D. Hydraulic elevator
Answer: D
Hydraulic elevators operate using fluid pressure inside a cylinder to move
the car.
4. Which electrical device prevents an elevator from running with open
doors?
A. Selector
B. Door interlock
C. Governor switch
D. Terminal limit
Answer: B
Door interlocks ensure doors are closed and locked before the elevator can
move.
5. What component prevents the elevator car from overshooting the top
landing?
A. Car station
B. Limit switch
C. Buffer
D. Selector tape
Answer: B
Final limit switches disable upward travel to prevent overtravel into
overhead space.
6. In traction elevators, what is the main function of the counterweight?
A. Reduce motor load
B. Increase friction on rails
C. Speed up leveling
D. Reduce hoistway heat
Answer: A
, Counterweights balance the car weight, reducing motor power
requirements.
7. Which code governs elevator installation and maintenance in most
U.S. jurisdictions?
A. NEC
B. ASME A17.1
C. ASME B30
D. NFPA 101
Answer: B
ASME A17.1/CSA B44 is the Safety Code for Elevators and Escalators.
8. What is the typical power supply for traction elevator motors?
A. 120 VAC 1-phase
B. 208 VAC 1-phase
C. 480 VAC 3-phase
D. 24 VDC
Answer: C
Three-phase 480V motors provide the necessary horsepower and efficiency.
9. What device ensures that an elevator stops at the correct floor?
A. Selector
B. Car light relay
C. Interlock
D. Jack head
Answer: A
Selectors monitor car position and signal stopping points.
10. What is the main hazard when handling governor ropes?
A. Electrical shock
B. Heat burns
C. Rope fraying
D. Chemical exposure
Answer: C
Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. What is the primary purpose of a governor in a traction elevator
system?
A. To control door operation
B. To monitor hoistway lighting
C. To detect overspeed conditions
D. To provide car leveling
Answer: C
The governor activates the safety mechanism when the elevator exceeds a
predetermined speed, preventing runaway conditions.
2. What component grips the governor rope during an overspeed event
to stop the car?
A. Buffer
B. Terminal switch
C. Counterweight
D. Safety jaws
Answer: D
Safety jaws clamp onto the rails to stop the car or counterweight when the
governor trips.
3. Which type of elevator uses a pump and hydraulic cylinder?
,A. Geared traction
B. Gearless traction
C. MRL traction
D. Hydraulic elevator
Answer: D
Hydraulic elevators operate using fluid pressure inside a cylinder to move
the car.
4. Which electrical device prevents an elevator from running with open
doors?
A. Selector
B. Door interlock
C. Governor switch
D. Terminal limit
Answer: B
Door interlocks ensure doors are closed and locked before the elevator can
move.
5. What component prevents the elevator car from overshooting the top
landing?
A. Car station
B. Limit switch
C. Buffer
D. Selector tape
Answer: B
Final limit switches disable upward travel to prevent overtravel into
overhead space.
6. In traction elevators, what is the main function of the counterweight?
A. Reduce motor load
B. Increase friction on rails
C. Speed up leveling
D. Reduce hoistway heat
Answer: A
, Counterweights balance the car weight, reducing motor power
requirements.
7. Which code governs elevator installation and maintenance in most
U.S. jurisdictions?
A. NEC
B. ASME A17.1
C. ASME B30
D. NFPA 101
Answer: B
ASME A17.1/CSA B44 is the Safety Code for Elevators and Escalators.
8. What is the typical power supply for traction elevator motors?
A. 120 VAC 1-phase
B. 208 VAC 1-phase
C. 480 VAC 3-phase
D. 24 VDC
Answer: C
Three-phase 480V motors provide the necessary horsepower and efficiency.
9. What device ensures that an elevator stops at the correct floor?
A. Selector
B. Car light relay
C. Interlock
D. Jack head
Answer: A
Selectors monitor car position and signal stopping points.
10. What is the main hazard when handling governor ropes?
A. Electrical shock
B. Heat burns
C. Rope fraying
D. Chemical exposure
Answer: C
