Which of the following types of sleepers is preferred on joints ?

A. to join the two rails together
B. to join rails with the sleeper
C. to allow rail to expand and contract freely
D. none of the above

A. 6.10 m
B. 8.84 m
C. 10.21m
D. 10.82 m

A. 1.83 m
B. 2.25 m
C. 3.35 m
D. 4.30 m

A. G/8
B. G/10
C. G/12
D. G/15
where G is the gauge

A. cast steel
B. mild steel
C. cast iron
D. spring steel

A. 10mm
B. 13mm
C. 16mm
D. 19 mm