Engineering :: Railway Engineering

@ : Home > Civil Engineering > Railway Engineering

61.

When the degree of curve is more than 3?, the rails are bent to the correct curvature before fixing them on to the sleepers.

Yes

62.

Creep causes

A.	opening of rail joints	B.	distortion of points and crossings
C.	buckling of track	D.	all of these

63.

In Indian railways, themaximum wheel base distance on broad gauge is 4.058 m.

True

False

64.

The gauge is widened on curves of

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

65.

The gauge should be

A.	6 mm	B.	12 mm
C.	20 mm	D.	30 mm

66.

The longitudinal movement of the rails in a track is technically known as

A.	buckling	B.	hogging
C.	creeping	D.	none of these

67.

The impact of the rail wheel ahead of the joint gives rise to the creep of the rail. This statement is according to

A.	wave theory	B.	percussion theory
C.	drag theory	D.	none of these

68.

In hogging

A.	the rail ends get bent down and deflected due to loose packing under the joints	B.	the rails get out of their original positions due to insufficient expansion joint gap
C.	the longitudinal movement of the rails in track takes place	D.	all of the above

69.

When the rails get out of their original position due to insufficient expansion joint gap, the phenomenon is known as buckling.

Agree

Disagree

70.

Which of the following statement is correct?

A.	When wheel passes over a rail joint, it causes positive creep.	B.	Insufficient and defective packing of ballast causes creep.
C.	Train wheels cause slight depression on the table of the rails due to their own weight	D.	all of the above