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UPSC Civil Service Exam Questions - Engineering

Q1:

What is the prime objective of providing a point lock ?

A To ensure that each switch is correctly set.

B To ensure that the point may not be operated while the train is on it.

C To detect any obstruction between stock rail and tongue rail.

D To limit the riding of the conical exterior circumference of the wheels.

ANS:B - To ensure that the point may not be operated while the train is on it.

Yes, A is correct. I also agree.