What is the prime objective of providing a point lock ?

1.	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.
Answer» C. To detect any obstruction between stock rail and tongue rail.

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What is the prime objective of providing a point lock ?

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