Questions
81
The height of the center of arm of a semaphore signal above the ground is
Answer: 7.5 m
83
When semaphore and warner are installed on the same post, then the stop indication is given when
Answer: both arms are horizontal
84
In a shunting signal if the red band is inclined at 45° it indicates
Answer: proceed
85
For the purpose of track maintenance, the number of turn out equivalent to one track km are
Answer: 10
86
A train is hauled by 4-8-2 locomotive.
The number of driving wheels in this locomotive is
Answer: 8
87
To ensure exact gauge, the gauge tie plates are provided at
Answer: both (a) and (b)
88
On a single rail track, goods trains loaded with heavy iron material run starting from
A to B and then empty wagons run from B to A. The amount of creep in the rails.
Answer: will be more in the direction of A to B
90
Which of the following statements regarding ballast materials are correct?
Answer: Sand ballast causes excessive wear on top of rail.
92
Which one of the following rail failures is caused by loose fish bolts at expansion joints?
Answer: crushed head
93
For a 8° curve track diverging from a main curve of 5° in an opposite direction in the layout of a broad gauge yard, the cant to be provided for the branch track for maximum speed of 45 km/h on the main line and ‘G’ = 1.676 m is (Permitted cant deficiency for the main line = 7.6 cm)
Answer: -0.168 cm
95
A train is hauled by 2-8-2 locomotive with 22.5 tonnes and on each driving axle. Assuming the coefficient of rail-wheel friction to be 0.25, what would be the hauling capacity of the locomotive?
Answer: 22.5 tonnes
97
What will be the curve lead for a 1 in 8.5 turnout taking off from a straight broad gauge track?
Answer: 28.49 m
98
The load on each axle of a locomotive is 22 tonnes. If the coefficient of friction is 0.2, then the hauling capacity due to 3 pairs of driving wheels will be
Answer: 13.21
99
In a B.G. railway track, the specified ruling gradent is 1 in 250. The horizontal curve of 3° on a gradient of 1 in 250 will have the permissible gradient of
Answer: 1 in 357
100
If ‘A’ is the angle formed by two gauge faces, the crossing number will be
Answer: cot A
