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55.

Tensile strength of steel used in rails should not be less than                        
A. 450 MPa B. 500 MPa
C. 700 MPa D. 850 MPa



56.

The desirable rate of change of cant deficiency in case of Meter Gauge is                        
A. 20 mm/sec B. 35 mm/sec
C. 55 mm/sec D. 65 mm/sec



57.

The compensation for curvature on gradient for Meter Gauge is given by
where R is radius of curve.                        
A. 70/R B. 52.5/R
C. 35/R D. 105/R




58.

The cross-sectional area of 52 kg flat footed rail is                        
A. 6155 mm2 B. 6615 mm2
C. 7235 mm2 D. 7825 mm2



59.

The distance through which the tongue rail moves laterally at the toe of the switch for movement of trains is called                        
A. flangeway clearance B. heel divergence
C. throw of the switch D. none of the above



60.

The formation width for a double line Broad Gauge track in cutting (excluding drains) as adopted on Indian Railways is                        
A. 6.10 m B. 8.84 m
C. 10.21m D. 10.82 m



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