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49.

Ordinary rails are made of

A.	mild steel	B.	cast iron
C.	wrought iron	D.	high carbon steel

50.

Pandrol clips cannot be used with

A.	wooden sleepers	B.	concrete sleepers
C.	CST-9 sleepers	D.	steel trough sleepers

51.

Sleeper density in India is normally kept as
where M is the rail length in meters.

A.	M + 2 to M + 7	B.	MtoM+2
C.	M + 5toM+10	D.	M

52.

Staggered joints are generally provided

A.	on curves	B.	on straight track
C.	when two different rail sections are required to be joined	D.	none of the above

53.

Stretcher bar is provided

A.	to permit lateral movement of the tongue rail	B.	to maintain the two tongue rails at the exact distance
C.	to ensure exact gauge at the toe of the switch as well as the nose of crossing	D.	to prevent any vertical movement between the wing rail and nose of crossing

54.

Switch angle is the angle between

A.	the gauge face of the stock rail and tongue rail	B.	the outer face of the stock rail and tongue rail
C.	the gauge face of the stock rail and outer face of the tongue rail	D.	the outer face of the stock rail and the gauge face of the tongue rail

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