Question19:-The device designed to stop a descending car or counter weight beyond its normal limit.
A:-Returning cam
B:-Pit switch
C:-Buffer
D:-Header assembly
Correct Answer:- Option-C
Question20:-The elevator car is suspended on the main rope by means of a frame called.
A:-Sling
B:-Buffer
C:-Machine unit
D:-Car body
Correct Answer:- Option-A
Question21:-A device which acts as stopping mechanism when the elevator runs beyond its rated speed.
A:-Limit switch
B:-Over speed governor
C:-Hydraulic ram
D:-Traction sheave
Correct Answer:- Option-B
Question22:-One Micrometer is equal to.
A:-0.1mm
8:-0.01ന്ന
C:-0.001mm
D:-0.0001mm
Correct Answer:- Option-C
Question23:-If the belt of an electric motor is broken, it needs the following type of maintenance
A:-Corrective
B:-Scheduled
C:-Preventive
D:-Timely
Correct Answer:- Option-A
Question24:-Type of maintenance is done before failure.
A:-Preventive
B:-Running
C:-Break down
D:-Scheduled
Correct Answer:- Option-A
Question25:-The device which connects the elevator car and landing doors without backlash.
A:-Door track
B:-Door coupler
C:-Door contact
D:-Door motor
Correct Answer:- Option-B
Question26:-It is used to know the elevator car position.
A:-Landing push button
B:-Floor position indicator
C:-Door contact
D:-Door sill
Correct Answer:- Option-B
Question27:-Which of the following is not a safety device on an elevator?
A:-Door lock
B:-Over speed governor
Call button
D:-Limit switch
Correct Answer:- Option-C
Question28:-Compensating ropes are generally required on elevators when the travel is.
A:-5 M
5:-10 14
C:-20M
D:-30 M or greater