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51.

To reduce the wearing of rails, the rails are placed at an

A.	inward slope of 1 in 20	B.	outward slope of 1 in 20
C.	inward slope of 1 in 30	D.	outward slope of 1 in 30

52.

The coning of wheels is made to prevent the

A.	lateral movement of the axle	B.	lateral movement of the wheels
C.	damage of the inside edges of rails	D.	all of these

53.

To prevent the flanges of wheels from rubbing the inside face of the rail, the distance between the inside edges of flanges is kept

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

54.

In coning of wheels, the wheels are given a slope of

A.	1 in 20	B.	1 in 25
C.	1 in 30	D.	1 in 40

55.

Due to the coning of wheels, the pressure of wheels is always near the

inner

outer

56.

Which of the following statement is wrong?

A.	The coning of wheels is provided for smooth running of trains.	B.	The coning of wheel prevents the wear of the inner faces of rails
C.	If the axle moves laterally towards one rail, the diameter of wheel rim increases on that rail	D.	On curves, the outer wheel has to travel lesser distance than the inner wheel.

57.

The rails are laid without bending, at flat curves, where the degree of curve is

A.	less than 3?	B.	equal to 3?
C.	more than 3?

58.

The distance between two adjoining axles fixed in a rigid frame is known as

A.	gauge	B.	wheel base distance
C.	creep	D.	none of these

59.

Creep is the

A.	longitudinal	B.	lateal
C.	vertical

60.

Creep is greater

A.	on curves	B.	in new rails than in old rails
C.	both (a) and (b)	D.	none of these