15.  On Indian Railways standard length of rails for B.G. track, is
A. 33 ft (10.06 m)
B. 36 ft (10.97 m)
C. 39 ft (11.89 m)
D. 42 ft (12.8 m).

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16.  On Indian Railways standard length of rails for M.G. track, is
A. 33 ft (10.06 m)
B. 36 ft (10.97 m)
C. 39 ft (11.89 m)
D. 42 ft (12.8 m).

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17.  30 m long rails are used in
A. India
B. Pakistan
C. Russia
D. U.S.A.

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18. At a rail joint, the ends of adjoining rails, are connected with a pair of fish plates and
A. 2 fish bolts
B. 4 fish bolts
C. 6 fish bolts
D. 8 fish bolts.

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19. Pick up the incorrect statement from the following :
A. Ends of adjoining rails should be in true alignment
B. Rail joints should be as strong as the rail section itself
C. Rail joints should be elastic laterally as well as vertically
D. All the above.

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20.  Rail joint supported on a single sleeper, is known
A. suspended rail joint
B. bridge rail joint
C. supported rail joint
D. square rail joint.

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21. Staggered rail joints are generally provided
A. on curves
B. on tangents
C. on bridges
D. in tunnels.

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