Minnesota Elevator Constructor Examination
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
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1. What is the primary purpose of an elevator governor?
A. To control normal operating speed
B. To lubricate the hoist ropes
C. To detect overspeed and initiate safety action
D. To balance the elevator car
Answer: C. To detect overspeed and initiate safety action
Rationale: The governor is a critical safety device that monitors the
elevator's speed. If the car exceeds a predetermined tripping speed,
the governor can activate the car safety system and initiate protective
action.
,2. In a traction elevator, what component provides the driving force
that moves the hoist ropes?
A. Governor
B. Traction sheave
C. Counterweight guide
D. Door operator
Answer: B. Traction sheave
Rationale: The traction sheave transfers motor torque to the hoist
ropes through friction. Proper rope/sheave interaction is essential for
moving the car and counterweight.
3. What is the primary purpose of an elevator counterweight?
A. To operate the car doors
B. To reduce the load the motor must move
C. To stop the elevator during overspeed
D. To provide emergency lighting
Answer: B. To reduce the load the motor must move
Rationale: The counterweight offsets much of the car's weight and a
portion of the rated load. This reduces the amount of energy and
motor torque required to move the elevator.
,4. Which device normally prevents an elevator door from closing
when an obstruction is detected?
A. Governor
B. Door restrictor
C. Door protective device
D. Buffer
Answer: C. Door protective device
Rationale: Door protective devices, such as electronic sensing systems,
detect passengers or objects in the doorway and cause the doors to
reopen or prevent closing.
5. What is the main function of an elevator buffer?
A. To increase elevator speed
B. To absorb energy if the car or counterweight travels beyond its
normal limits
C. To control door timing
D. To support the hoist ropes
Answer: B. To absorb energy if the car or counterweight travels
beyond its normal limits
, Rationale: Buffers are installed at the bottom of the hoistway to
provide controlled energy absorption if the car or counterweight
reaches the lower limit of travel.
6. Which elevator type commonly uses a hydraulic piston to move the
car?
A. Traction elevator
B. Hydraulic elevator
C. Gearless traction elevator
D. Machine-room-less traction elevator
Answer: B. Hydraulic elevator
Rationale: Hydraulic elevators use pressurized hydraulic fluid to move
a piston connected directly or indirectly to the elevator car.
7. What is the purpose of guide rails in an elevator hoistway?
A. To provide electrical power
B. To guide and control the movement of the car and counterweight
C. To operate the door locks
D. To lubricate the hoist ropes
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
Download Pdf
1. What is the primary purpose of an elevator governor?
A. To control normal operating speed
B. To lubricate the hoist ropes
C. To detect overspeed and initiate safety action
D. To balance the elevator car
Answer: C. To detect overspeed and initiate safety action
Rationale: The governor is a critical safety device that monitors the
elevator's speed. If the car exceeds a predetermined tripping speed,
the governor can activate the car safety system and initiate protective
action.
,2. In a traction elevator, what component provides the driving force
that moves the hoist ropes?
A. Governor
B. Traction sheave
C. Counterweight guide
D. Door operator
Answer: B. Traction sheave
Rationale: The traction sheave transfers motor torque to the hoist
ropes through friction. Proper rope/sheave interaction is essential for
moving the car and counterweight.
3. What is the primary purpose of an elevator counterweight?
A. To operate the car doors
B. To reduce the load the motor must move
C. To stop the elevator during overspeed
D. To provide emergency lighting
Answer: B. To reduce the load the motor must move
Rationale: The counterweight offsets much of the car's weight and a
portion of the rated load. This reduces the amount of energy and
motor torque required to move the elevator.
,4. Which device normally prevents an elevator door from closing
when an obstruction is detected?
A. Governor
B. Door restrictor
C. Door protective device
D. Buffer
Answer: C. Door protective device
Rationale: Door protective devices, such as electronic sensing systems,
detect passengers or objects in the doorway and cause the doors to
reopen or prevent closing.
5. What is the main function of an elevator buffer?
A. To increase elevator speed
B. To absorb energy if the car or counterweight travels beyond its
normal limits
C. To control door timing
D. To support the hoist ropes
Answer: B. To absorb energy if the car or counterweight travels
beyond its normal limits
, Rationale: Buffers are installed at the bottom of the hoistway to
provide controlled energy absorption if the car or counterweight
reaches the lower limit of travel.
6. Which elevator type commonly uses a hydraulic piston to move the
car?
A. Traction elevator
B. Hydraulic elevator
C. Gearless traction elevator
D. Machine-room-less traction elevator
Answer: B. Hydraulic elevator
Rationale: Hydraulic elevators use pressurized hydraulic fluid to move
a piston connected directly or indirectly to the elevator car.
7. What is the purpose of guide rails in an elevator hoistway?
A. To provide electrical power
B. To guide and control the movement of the car and counterweight
C. To operate the door locks
D. To lubricate the hoist ropes
