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Question 1. Which ASME code specifically governs the safety of existing elevators and escalators? A) ASME A17. B) ASME A17. C) ASME A17. D) ASME A18. Answer: C Explanation: ASME A17.3 is the “Existing Elevators and Escalators” code, addressing modifications, inspections, and repairs of already-installed equipment. Question 2. Under the ADA, the minimum clear width of an elevator car for a wheelchair-accessible passenger is: A) 30 in. B) 36 in. C) 42 in. D) 48 in. Answer: B Explanation: ADA requires a minimum clear opening of 36 in. (91 mm) to accommodate a standard wheelchair. Question 3. NEC Article 620 primarily deals with: A) Fire-rating of hoistway walls. B) Electrical requirements for elevators. C) Hydraulic fluid classification. D) Mechanical brake testing. Answer: B
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Explanation: NEC 620 sets the electrical standards for power, control, and grounding of elevator systems. Question 4. A “geared” traction machine differs from a “gearless” machine by: A) Using a motor directly coupled to the sheave. B) Incorporating a reduction gearbox between motor and sheave. C) Eliminating the need for a brake. D) Operating only on hydraulic power. Answer: B Explanation: Geared machines have a gearbox that reduces motor speed and increases torque before driving the traction sheave. Question 5. The primary function of a traction-machine governor is to: A) Adjust cabin lighting. B) Limit maximum travel speed. C) Control door opening time. D) Provide emergency power. Answer: B Explanation: Governors monitor elevator speed and trigger safety brakes if overspeed is detected. Question 6. In a 2 : 1 reeving arrangement, the rope length that moves is: A) Twice the car travel. B) Equal to the car travel. C) Half the car travel. D) Unrelated to car travel.
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D) 100 % of rated load. Answer: C Explanation: Counterweights balance the car’s dead load plus about 40- 50 % of the rated live load to reduce motor effort. Question 10. In a hydraulic-in-ground elevator, the cylinder is located: A) Above the car. B) Inside the hoistway pit. C) Below the pit, buried in the foundation. D) On the roof of the machine room. Answer: C Explanation: In-ground systems place the cylinder below the pit, eliminating a visible machine room. Question 11. Which valve is used to prevent hydraulic fluid loss after a catastrophic pipe rupture? A) Check valve. B) Relief valve. C) Rupture (or safety) valve. D) Solenoid valve. Answer: C Explanation: Rupture valves open automatically to vent fluid and protect the system when pressure exceeds a safe limit. Question 12. The purpose of an oil-to-water cooler in a hydraulic elevator system is to: A) Increase fluid temperature for faster flow. B) Reduce fluid viscosity for consistent performance.
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C) Filter contaminants. D) Provide emergency power. Answer: B Explanation: Cooling maintains fluid viscosity, ensuring predictable cylinder speed and preventing overheating. Question 13. Which of the following is a required feature on elevator car doors for fire service operation? A) Automatic closing only. B) Manual release handle. C) Photo-electric sensor. D) Decorative panel. Answer: B Explanation: Firefighters must be able to manually open doors; a release handle satisfies this requirement. Question 14. A “slide guide” in a car guide system is characterized by: A) Rolling steel wheels. B) A flat surface that the car slides over. C) Magnetic levitation. D) Air cushion. Answer: B Explanation: Slide guides provide a low-friction surface for the car to glide, common in low-rise elevators. Question 15. The correct term for the device that detects an obstruction in the doorway and stops the car is: A) Limit switch.
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A) Constant speed operation. B) Soft start and stop for the traction motor. C) Emergency lighting. D) Door-cycle timing. Answer: B Explanation: VFDs vary motor frequency, allowing smooth acceleration and deceleration. Question 19. In escalator safety, a “comb plate” is installed to: A) Support the handrail. B) Prevent objects from entering the step chain. C) Align the steps. D) Provide lighting. Answer: B Explanation: Comb plates have teeth that block debris and prevent fingers from being caught between steps. Question 20. According to Nevada statutes, a C-7 contractor must submit an accident report to the NSCB within: A) 24 hours. B) 48 hours. C) 72 hours. D) 5 days. Answer: B Explanation: Nevada Chapter 624 requires contractors to report accidents to the Nevada State Construction Board within 48 hours.
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Question 21. The minimum height for a control panel (COP) to be accessible to wheelchair users is: A) 36 in. above floor. B) 48 in above floor. C) 54 in above floor. D) 60 in above floor. Answer: B Explanation: ADA sets the maximum reach height for operable controls at 48 in. (1220 mm). Question 22. A “gearless” traction machine typically achieves higher speeds because: A) It uses a larger motor directly coupled to the sheave. B) It incorporates multiple reduction stages. C) It relies on hydraulic assistance. D) It uses a belt drive. Answer: A Explanation: Direct coupling eliminates gear losses, allowing higher motor speeds and smoother operation. Question 23. Which of the following is NOT a required feature of an emergency communication system in an elevator? A) Two-way voice. B) Visual indicator. C) Battery backup. D) Automatic fire suppression. Answer: D
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Answer: B Explanation: A sheave is a grooved wheel that guides and supports the suspension ropes. Question 27. Which inspection frequency is mandated by ASME A17.2 for routine elevator inspections in Nevada? A) Monthly. B) Quarterly. C) Semi-annual. D) Annual. Answer: D Explanation: ASME A17.2 requires at least one annual comprehensive inspection. Question 28. The correct fire-rating for an elevator hoistway shaft wall in a high-rise building is: A) 1-hour. B) 2-hour. C) 3-hour. D) 4-hour. Answer: C Explanation: NFPA 13 and local codes typically demand a 3-hour fire-rated shaft for high-rise elevators. Question 29. A “wedge socket” termination is preferred over a “Babbitted” socket because: A) It is cheaper. B) It provides higher tensile strength.
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C) It requires no tools. D) It is used only on hydraulic systems. Answer: B Explanation: Wedge sockets create a larger bearing surface, offering greater tensile capacity. Question 30. The primary function of a “door-operator” in an elevator system is to: A) Control car speed. B) Open and close the car doors. C) Monitor load weight. D) Supply emergency power. Answer: B Explanation: Door operators mechanically move the doors according to control signals. Question 31. In a “holeless” hydraulic elevator, the cylinder is mounted: A) Inside the pit. B) On the side of the car. C) Above the car, eliminating a floor-hole. D) In the machine room. Answer: C Explanation: Holeless designs place the cylinder above the car, removing the need for a floor opening. Question 32. Which device provides protection against over-travel of the elevator car into the pit? A) Governor.
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A) 30 minutes. B) 60 minutes. C) 90 minutes. D) 120 minutes. Answer: B Explanation: Local codes often adopt a 60-minute fire rating for hoistway doors to limit fire spread. Question 36. In a traction system, the “deflector sheave” is used to: A) Reduce rope wear. B) Change rope direction from the motor to the car. C) Increase motor torque. D) Provide emergency braking. Answer: B Explanation: Deflector sheaves redirect the rope path, allowing compact machine room layouts. Question 37. Which of the following is NOT a permissible method for testing a traction-machine brake? A) Dynamic brake test. B) Static torque test. C) Visual inspection only. D) Full-load brake test. Answer: C Explanation: Visual inspection alone does not verify brake performance; dynamic or static tests are required.
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Question 38. The term “LOTO” stands for: A) Load-On-Travel-Operation. B) Lockout-Tagout. C) Level-Of-Tolerance-Operation. D) Linear-Offset-Torque. Answer: B Explanation: LOTO is a safety procedure to ensure machines are de-energized and cannot be started unintentionally. Question 39. Which component of a hydraulic elevator controls the rate of cylinder extension? A) Relief valve. B) Flow control valve. C) Accumulator. D) Pressure gauge. Answer: B Explanation: Flow control valves regulate hydraulic fluid flow, thereby controlling cylinder speed. Question 40. A “skirt switch” on an escalator detects: A) Handrail speed. B) Presence of a passenger’s foot on the side panel. C) Step misalignment. D) Motor temperature. Answer: B Explanation: Skirt switches sense intrusion into the side panel and stop the escalator if a foot is detected.
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Explanation: Tensioners keep suspension ropes at the correct tension, preventing excessive wear and ensuring smooth operation. Question 44. Which safety device activates when the car exceeds its rated speed in the downward direction? A) Governor. B) Safety brake (safety). C) Door interlock. D) Buffer. Answer: B Explanation: The safety brake (often called the “safety”) is triggered by the governor when overspeed occurs, applying the brake. Question 45. The Nevada C-7 contractor’s maximum allowable bond amount for a single elevator contract is: A) $5,000. B) $10,000. C) $25,000. D) $50,000. Answer: C Explanation: Nevada statutes cap the bond for C-7 contracts at $25,000 to protect public funds. Question 46. In an escalator, the “handrail drive” is synchronized to the step chain by means of: A) A separate motor with a gear ratio. B) A hydraulic pump. C) A friction-wheel clutch.
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D) An electronic speed sensor. Answer: C Explanation: A friction-wheel clutch couples the handrail drive to the main step chain, ensuring matching speeds. Question 47. The correct fire-resistance rating for a hoistway shaft in a residential building of three stories is: A) 20 minutes. B) 45 minutes. C) 1 hour. D) 2 hours. Answer: C Explanation: Residential codes typically require a 1-hour fire-rated shaft to protect occupants during a fire. Question 48. Which device monitors hydraulic fluid temperature to protect the system from overheating? A) Thermostat. B) Pressure gauge. C) Flow meter. D) Level sensor. Answer: A Explanation: A thermostat or temperature sensor triggers cooling or shutdown when fluid exceeds safe limits. Question 49. The term “cab-interlock” refers to: A) A sensor that prevents car movement when doors are not fully closed. B) A device that locks the car in the hoistway during fire.
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A) Balance the car weight during travel. B) Maintain constant rope tension despite load changes. C) Provide emergency braking. D) Reduce motor horsepower. Answer: B Explanation: Compensation devices adjust rope length to keep tension consistent as the car moves. Question 53. The primary purpose of an “electronic governor” versus a mechanical governor is to: A) Eliminate the need for a brake. B) Provide programmable speed limits and diagnostics. C) Reduce power consumption. D) Increase car capacity. Answer: B Explanation: Electronic governors can be programmed for multiple speed limits and provide monitoring data. Question 54. In a hydraulic elevator, the “accumulator” serves to: A) Store pressurized fluid for smooth start/stop. B) Filter contaminants. C) Measure load weight. D) Supply power to the car lights. Answer: A Explanation: Accumulators absorb and release fluid, smoothing pressure fluctuations during operation.
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Question 55. Which of the following is NOT a typical component of an elevator’s emergency power system? A) Diesel generator. B) Battery-backed UPS. C) Solar panel array on the car roof. D) Automatic transfer switch. Answer: C Explanation: Solar panels on the car roof are not standard for emergency power; generators, batteries, and ATS are. Question 56. The correct term for the safety device that stops the car if the hoistway door is opened while the car is in motion is: A) Door-interlock. B) Safety-brake. C) Over-travel protector. D) Car-lock. Answer: A Explanation: Door-interlocks prevent car movement when any hoistway door is open. Question 57. In escalator design, the maximum permitted step riser height is: A) 6 in. B) 7 in. C) 8 in. D) 9 in. Answer: C
