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Civil Engineering Objective Questions { Railways }

134.  If absolute levels of rails at the consecutive axles A, B, and C separated by 1.8 metres are 100.505 m, 100.530 m, and 100.525 m respectively, the unevenness of rails, is
A. 0.065 m
B. 0.055 m
C. 0.045 m
D. 0.035 m.
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135.  On a straight railway track, absolute levels at point A on two rails are 100.550 m and 100.530 m and the absolute levels at point B 100 m apart are 100.585 m and 100.515 m respectively, the value of twist of rails per metre run, is
A. 0.4 mm
B. 0.5 mm
C. 0.7 mm
D. 0.8 mm.
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136.  If a is average number of peaks more than 10 mm of uneveness per kilometre, b is average number peaks more than 6 mm for gauge variation per kilometre and c is average number of peaks more than 2 mm twist per metre, then composite current recording index (le), as recommended by Indian Northern Railways, is
A. /, = 10 ? a ? b - cI4
B.11 = 20 ? a ? b - cI4
C. lc= 30 ? a ? b - cI4
D. I = 40 ? a ? b - c14.
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137.  Indian Railways detects the rail flow by
A. Mitsubish Rail flow dector
B. Soni Rail flow dector
C. Audi-gauge Rail flow detector
D. Kraut Kramer Rail flow detector.
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138.  In a railway track, permissible gauge with tolerance under loaded condition, is
A. G + 0,1 mm
B. G + 1.5 mm
C. G ? 1.0 mm
D. G ? 1 5 mm
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139. Track construction involves preparation of
A. subgrade
B. plate laying
C. ballasting
D. all the above.
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140.  In Indian railways, plate laying is usually done by
A. side method
B. telescopic method
C. American method
D. all the above.
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