CET Elevator Installation & Components 1 — Questions and Answers
Question 1: Which component guides the elevator car along the shaft?
- Counterweight
- Guide rails (Correct answer)
- Hoist ropes
- Safety governor
Correct answer: Guide rails
Guide rails are installed vertically in the hoistway and ensure the car moves smoothly along a defined path.
Question 2: What is the function of the elevator buffer?
- Provide car acceleration
- Control door movement
- Absorb energy at the shaft base (Correct answer)
- Measure car weight
Correct answer: Absorb energy at the shaft base
Buffers are installed at the bottom of the hoistway to absorb impact and stop the car safely if it travels too far downward.
Question 3: Which system uses a piston and fluid to raise and lower the elevator?
- Traction drive
- Hydraulic system (Correct answer)
- Rack and pinion
- Magnetic drive
Correct answer: Hydraulic system
Hydraulic systems use fluid pressure to operate a piston that lifts or lowers the elevator car.
Question 4: What is the purpose of a machine room in elevator installation?
- Provides ventilation
- Stores tools and safety gear
- Houses elevator drive and control systems (Correct answer)
- Acts as emergency exit
Correct answer: Houses elevator drive and control systems
The machine room houses the drive motor, controller, and other critical components necessary for elevator operation.
Question 5: Which cable connects the elevator car and counterweight in a traction system?
- Control wire
- Governor rope
- Hoist rope (Correct answer)
- Tension pulley
Correct answer: Hoist rope
Hoist ropes connect the car to the counterweight and wrap around a drive sheave to enable vertical movement.
Question 6: Why is correct alignment of elevator rails critical?
- To balance counterweights
- To meet design aesthetics
- To ensure smooth and safe travel (Correct answer)
- To reduce wiring cost
Correct answer: To ensure smooth and safe travel
Proper alignment ensures smooth operation and prevents vibration or derailment of the elevator car.
CET Elevator Installation & Components 1
Which component guides the elevator car along the shaft?