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Civil Engineering Objective Questions { Railways }

78.  The effective bearing area of all types of sleepers, is
A. 0.40 m2
B. 0.42 m2
C. 0.44 m2
D. 0.46 m2

79. Monnier, the inventor of R.C.C., suggested the introduction of reinforced cement concert sleepers for the railways in

80. The main advantage of a cement concrete sleeper, is :
A. its heavy weight which improves the track modulus
B. its capacity to maintain gauge
C. its suitability for track circuiting
D. all the above.

81. A mono-block sleeper has
A. square section
B. rectangular section
C. trapezoidal section
D. semi-circular section

82.  On either side of the centre line of rails, a cant of 1 in 20 in the sleeper is provided for a distance of
A. 150 mm
B. 165 mm
C. 175 mm
D. 185 mm.

83.  Each block of a two-block concrete sleeper is
A. 722 mm x 295 mm x 271 mm and 215 kg in weight
B. 250 mm x 154 mm x 196 mm and 260 kg in weight
C. 525 mm x 350 mm x 275 mm and 280 kg in weight
D. none of these.

84. Ballast packed below and around the sleepers to transfer the load from sleepers to formation, generally consists of
A. broken stones
B. gravels
C. moorum
D. all the above.

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