Practice Test: Question Set - 11
1. 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
- (A) 26.41
- (B) 19.81
- (C) 13.21
- (D) 6.61
2. 30 m long rails are used in
- (A) India
- (B) U.K.
- (C) Russia
- (D) U.S.A.
3. Overall depth of a dog spike, is
- (A) 120.6 mm
- (B) 155.90 mm
- (C) 135 mm
- (D) 150 mm
4. To prevent creep in rails, the steel sleepers are fixed with rails by clips, bolts and
- (A) One key
- (B) Two keys
- (C) Three keys
- (D) Four keys
5. 52 kg rails are mostly used in
- (A) Broad Gauge
- (B) Metre Gauge
- (C) Narrow Gauge
- (D) Both (A) and (B)
6. Safe speed (V) on a curve of radius 970 metres provided with two transition curves on Board Gauge track, is
- (A) 112 km/hour
- (B) 122 km/hour
- (C) 132 km/hour
- (D) 142 km/hour
7. Widening of gauge is provided if degree of the curve, is
- (A) 3° or less
- (B) 3°
to 4½°
- (C) More
than 4½°
- (D) None of
these
8. The height of the rail for 52 kg rail section is
- (A) 143 mm
- (B) 156 mm
- (C) 172 mm
- (D) 129 mm
9. The life of a wooden sleeper depends upon
- (A) Quality of
its timber
- (B) Ability to
resist decay
- (C) Resistance
to weathering
- (D) All the
above
10. Anti-creep anchors are fixed to rails by
- (A) Wedging
- (B) Spring grip
- (C) Clamping
- (D) All the
above
11. Sleeper density in India is normally kept as
- (A) (M + 2) to (M + 7)
- (B) M to (M + 2)
- (C) (M + 5) to (M + 10)
- (D) M
Where ‘M’ is the rail length in
meters
12. Composite sleeper index determines
- (A) Number of
sleepers per rail length
- (B) Suitability
of wooden sleepers
- (C) Permissible
stresses in steel sleepers
- (D) None of
these
13. If G is gauge distance and a is crossing, the distance between the nose of acute crossing and nose of obtuse crossing of a rail diamond, measured along the rail not forming the diamond, is
- (A) G cot α
- (B) G tan α
- (C) G sin α
- (D) G cos α
14. Loose jaws of steel trough sleepers are made of
- (A) Cast steel
- (B) Mild steel
- (C) Cast iron
- (D) Spring steel
15. Regional Indian railways use different types of sleepers according to their
- (A) Availability
- (B) Economy
- (C) Suitability
- (D) All the
above
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