For developing thinly populated areas, the correct choice of gauge is_________________?

The purpose of providing fillet in a rail section is to_________________?

A. increase the lateral strength

B. increase the vertical stiffness

C. avoid the stress concentration

D. reduce the wear

52 kg rails are mostly used in__________________?

A. Broad Gauge

B. Meter Gauge

C. Narrow Gauge

D. both (A) and (B)

Head width of 52 kg rail section is________________?

A. 61.9 mm

B. 66.7mm

C. 67mm

D. 72.33 mm

Ordinary rails are made of_______________?

A. mild steel

B. cast iron

C. wrought iron

D. high carbon steel

Number offish bolts per fish plate is________________?

A. 2

B. 4

C. 5

D. 6