NYC ELEVATOR MECHANIC (DCAS) –
CERTIFICATION PRACTICE EXAM
Questions With Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf A+ Grade
Guarantee Verified By Professionals
1.
What is the primary function of an elevator governor?
A. Increase motor speed
B. Control door opening time
C. Activate safety brakes during overspeed
D. Balance the counterweight system
Correct Answer: C ✔
Rationale: The elevator governor is a critical safety device designed to detect
overspeed conditions and trigger the safety brake system to stop the elevator
car.
2.
Which component counterbalances the weight of the elevator car?
A. Hoist motor
B. Counterweight
,C. Governor cable
D. Brake drum
Correct Answer: B ✔
Rationale: The counterweight reduces motor load by balancing the elevator car
weight, improving efficiency and stability.
3.
OSHA regulations primarily focus on:
A. Equipment color coding
B. Workplace safety standards
C. Marketing elevator systems
D. Electrical billing procedures
Correct Answer: B ✔
Rationale: OSHA establishes workplace safety standards to protect workers from
hazards, especially in construction and maintenance environments.
4.
What type of current is most commonly used in modern elevator traction
systems?
A. Direct Current (DC) only
B. Alternating Current (AC) with variable frequency drives
C. Solar current
D. Static current
Correct Answer: B ✔
Rationale: Modern elevators typically use AC motors with VFDs (Variable
Frequency Drives) for smooth acceleration and energy efficiency.
5.
,The purpose of a hoist rope is to:
A. Power the motor
B. Transmit passenger signals
C. Support and move the elevator car
D. Cool the brake system
Correct Answer: C ✔
Rationale: Hoist ropes connect the car and counterweight, enabling vertical
movement through traction.
6.
Which device prevents the elevator car from falling if the hoist rope fails?
A. Governor
B. Safety gear
C. Encoder
D. Relay switch
Correct Answer: B ✔
Rationale: Safety gear mechanisms clamp onto guide rails to stop the car during
free fall conditions.
7.
A PLC in elevator systems is used for:
A. Painting elevator shafts
B. Programming mechanical doors only
C. Controlling automated logic operations
D. Cooling hydraulic oil
Correct Answer: C ✔
Rationale: A Programmable Logic Controller (PLC) manages automated elevator
operations such as floor selection and door control.
, 8.
Hydraulic elevators primarily rely on:
A. Air pressure
B. Fluid pressure
C. Magnetic levitation
D. Chain drive
Correct Answer: B ✔
Rationale: Hydraulic elevators use pressurized fluid to move the piston and lift
the car.
9.
What is the main purpose of guide rails in an elevator system?
A. Supply electricity
B. Guide car movement vertically
C. Cool motor components
D. Increase speed
Correct Answer: B ✔
Rationale: Guide rails ensure stable and aligned vertical movement of the
elevator car.
10.
Which safety standard governs electrical installations in elevators in the U.S.?
A. ANSI Z87
B. NEC (National Electrical Code)
C. FAA Part 107
D. DOT Regulation 49
CERTIFICATION PRACTICE EXAM
Questions With Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf A+ Grade
Guarantee Verified By Professionals
1.
What is the primary function of an elevator governor?
A. Increase motor speed
B. Control door opening time
C. Activate safety brakes during overspeed
D. Balance the counterweight system
Correct Answer: C ✔
Rationale: The elevator governor is a critical safety device designed to detect
overspeed conditions and trigger the safety brake system to stop the elevator
car.
2.
Which component counterbalances the weight of the elevator car?
A. Hoist motor
B. Counterweight
,C. Governor cable
D. Brake drum
Correct Answer: B ✔
Rationale: The counterweight reduces motor load by balancing the elevator car
weight, improving efficiency and stability.
3.
OSHA regulations primarily focus on:
A. Equipment color coding
B. Workplace safety standards
C. Marketing elevator systems
D. Electrical billing procedures
Correct Answer: B ✔
Rationale: OSHA establishes workplace safety standards to protect workers from
hazards, especially in construction and maintenance environments.
4.
What type of current is most commonly used in modern elevator traction
systems?
A. Direct Current (DC) only
B. Alternating Current (AC) with variable frequency drives
C. Solar current
D. Static current
Correct Answer: B ✔
Rationale: Modern elevators typically use AC motors with VFDs (Variable
Frequency Drives) for smooth acceleration and energy efficiency.
5.
,The purpose of a hoist rope is to:
A. Power the motor
B. Transmit passenger signals
C. Support and move the elevator car
D. Cool the brake system
Correct Answer: C ✔
Rationale: Hoist ropes connect the car and counterweight, enabling vertical
movement through traction.
6.
Which device prevents the elevator car from falling if the hoist rope fails?
A. Governor
B. Safety gear
C. Encoder
D. Relay switch
Correct Answer: B ✔
Rationale: Safety gear mechanisms clamp onto guide rails to stop the car during
free fall conditions.
7.
A PLC in elevator systems is used for:
A. Painting elevator shafts
B. Programming mechanical doors only
C. Controlling automated logic operations
D. Cooling hydraulic oil
Correct Answer: C ✔
Rationale: A Programmable Logic Controller (PLC) manages automated elevator
operations such as floor selection and door control.
, 8.
Hydraulic elevators primarily rely on:
A. Air pressure
B. Fluid pressure
C. Magnetic levitation
D. Chain drive
Correct Answer: B ✔
Rationale: Hydraulic elevators use pressurized fluid to move the piston and lift
the car.
9.
What is the main purpose of guide rails in an elevator system?
A. Supply electricity
B. Guide car movement vertically
C. Cool motor components
D. Increase speed
Correct Answer: B ✔
Rationale: Guide rails ensure stable and aligned vertical movement of the
elevator car.
10.
Which safety standard governs electrical installations in elevators in the U.S.?
A. ANSI Z87
B. NEC (National Electrical Code)
C. FAA Part 107
D. DOT Regulation 49
