A. stop
B. proceed
C. proceed cautiously
D. none of the above
A. crushed head
B. angular break
C. split head
D. transverse fissures
A. 4.27 m
B. 4.88 m
C. 5.49 m
D. 6.10 m
A. to permit lateral movement of the tongue rail
B. to maintain the two tongue rails at the exact distance
C. to ensure exact gauge at the toe of the switch as well as the nose of crossing
D. to prevent any vertical movement between the wing rail and nose of crossing
A. 20 mm/sec
B. 35 mm/sec
C. 55 mm/sec
D. 65 mm/sec
A. one on either side
B. two outside and one inside
C. one outside and two inside
D. two outside and two inside
A. Brick ballast has poor drainage characteristics.
B. Coal ash is not used as ballast with steel or cast iron sleepers.
C. Gravel ballast gives better performance on soft formation.
D. Sand ballast causes excessive wear on top of rail