MCQ
1. The arrangement of rails which permit trains to cross another track and also to divert to the other track, is called--
Diamond crossing
Diamond crossing with single slip
Diamond crossing with double slip
Cross over
2. For providing the required tilt of rails, adazing of wooden sleepers, is done for--
Bull headed rails
Double headed rails
Flat footed rails
Any type of rails
3. Consider the following statements about concrete sleepers. 1. They improve the track modulus. 2. They have good scrap value. 3. They render transportation easy. 4. They maintain the gauge quite satisfactorily. Of these statements--
1 and 2 are correct
2 and 3 are correct
3 and 4 are correct
1 and 4 are correct
4. Type of switch rails generally adopted for modern track, is--
Straight switch
Curved switch
Loose heel switch
Bent switch
5. In a B.G. railway track, the specified ruling gradient is 1 in 250. The horizontal curve of 3" on a gradient of 1 in 250 will have the permissible gradient of--
1 in 257
1 in 357
1 in 457
1 in 512
6. Pick up the incorrect statement from the following-
Sleepers hold the rails at proper gauge on straights
Sleepers provide stability to the permanent way
Sleepers act as an elastic cushion between rails and ballast
None of these
7. Staggered rail joints are generally provided-
On curves
On tangents
On bridges
In tunnels
8. Pick up the correct statement from the following:--
An extra width of 7.5 cm ballast is provided on outside a curve if track is laid with short welded rails
An extra width of 7.5 cm ballast is provided on outside a curve sharper than 3° on B.G. and M.G. tracks
An extra width of 15 cm ballast is provided on each shoulder if the track is laid with welded rails
All the above
9. Staggered rail joints are generally provided--
On curves
On tangents
On bridges
In tunnels
10. Total effective bearing area of both the bowls of a pot sleeper, is-
Slightly more than that of a wooden sleeper
Slightly less than that of a wooden sleeper
Equal to that of a wooden sleeper
None of these
11. Normally maximum cant permissible in Meter Gauge is--
75 mm
90 mm
140 mm
165 mm
12. The following tests are conducted for rails: (i) Falling weight test (ii) Tensile test (iii) Hammer test The compulsory tests are--
Only (i)
(i) and (ii)
(ii) and (iii)
(i) and (iii)
13. On either side of the centre line of rails, a cant of 1 in 20 in the sleeper is provided for a distance of--
150 mm
165 mm
175 mm
185 mm
14. On Indian Railways, number of a crossing is defined as--
Sine of angle of crossing
Cosine of angle of crossing
Tangent of angle of crossing
Contingent of angle of crossing
15. Pandrol clips cannot be used with--
Wooden sleepers
Concrete sleepers
CST-9 sleepers
Steel trough sleepers
16. If n is length of a rail in metres, the number of sleepers per rail length generally varies from--
n to (n+2)
(n+2) to (n+4)
(n+3) to (n+6)
(n+4) to (n+5)
17. The arrangement of rails which permit trains to cross another track and also to divert to the other track, is called--
Diamond crossing
Diamond crossing with single slip
Diamond crossing with double slip
Cross over
18. On either side of the centre line of rails, a cant of 1 in 20 in the sleeper is provided for a distance of--
150 mm
165 mm
175 mm
185 mm
19. In a B.G. railway track, the specified ruling gradient is 1 in 250. The horizontal curve of 3" on a gradient of 1 in 250 will have the permissible gradient of--
1 in 257
1 in 357
1 in 457
1 in 512
20. A CST-9 sleeper consists of--
Two inverted triangular pots on either side of rail seat
A central plate with a projected key and box on the top of plate
A tie bar and 4 cotters to connect two cast iron plates
All the above