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221.

The heel divergency recommended for broad gauge tracks by the India railways is

A.	116 mm	B.	128 mm
C.	133 mm	D.	156 mm

222.

The switch angle is the angle subtended between the gauge faces of the

A.	tongue rail and check rail	B.	stock rail and check rail
C.	stock rail and tongue rail	D.	none of these

223.

If ? is the switch angle and R is the radius of the turn out, the length of tongue rail will be

A.	R tan ?	B.	R tan ? / 2
C.	R cot ?	D.	R cot ? / 2

224.

The distance between the running face of the stock rail and the toe of the tongue rail, is known as

A.	heel divergence	B.	heel clearance
C.	flangway clearance	D.	throw of switch

225.

The heel divergence is always

A.	equal to	B.	less than
C.	greater than

226.

The switch angle depends upon

A.	length of tongue rail	B.	heel divergance
C.	both (a) and (b)	D.	none of these

227.

The maximum value of throw of switch for a broad gauge track is

A.	89 mm	B.	95 mm
C.	108 mm	D.	121 mm

228.

Which of the following statement is correct?

A.	The tongue rail should be longer than the stock rail.	B.	The tongue rail should be smaller than rigid wheel base of the vehicle.
C.	Track spacing is the distance between the running edge of stock and switch rails at the switch heel	D.	Facing points are such places in the track where trains first pass over switches and then over crossings.

229.

Trailing points are on the

same

opposite

230.

The number of a crossing is defined as the cotangent of the crossing angle.

True

False