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151.

The rail chairs are generally made of

A.	cast iron	B.	low carbon steel
C.	high carbon steel	D.	stainless steel

152.

Which of the following bolt is not used in rail tracks?

A.	Fish bolt	B.	Dog bolt
C.	Eye bolt	D.	Rag bolt

153.

The mass of a rail chair is about

A.	10 kg	B.	15.6 kg
C.	22 kg	D.	30 kg

154.

Which of the following statement is wrong?

A.	The fish plates are so designed that they fit the underside of the rail head and top of the rail foot in case of front footed rails.	B.	Now-a-days, fist plates are manufactured of steel.
C.	Due to entering of sand between contact surface of rail and the fish plates, the wearing of fish plates start.	D.	In case of steel sleepers, the chairs are not welded.

155.

The bearing plates are used to fix

A.	flat footed	B.	bull headed
C.	double headed

156.

The main purpose of using bering plates is to

A.	distribute the pressure over wider area	B.	eliminate the adzingt of wooden sleepers
C.	prevent the widening of gauge of curves	D.	all of these

157.

The spike commonly used to fix the rails on wooden sleepers is

A.	dog spike	B.	round spike
C.	screw spike	D.	all of these

158.

The overall depth of a dog spike is

A.	120.6 mm	B.	159.5 mm
C.	175.9 mm	D.	180.6 mm

159.

Round spikes are not used for fixing

A.	flat footed	B.	bull headed
C.	flat footed

160.

The spike used for fixing chairs of bull headed rail to wooden sleepers is

A.	dog spike	B.	round spike
C.	elastic spike	D.	all of these