A. 6.10 m
B. 8.84 m
C. 10.21m
D. 10.82 m
A. heel of the switch to the toe of the switch
B. heel of the switch to the theoretical nose of the crossing
C. toe of the switch to the theoretical nose of crossing
D. toe of the switch to the actual nose of crossing
A. changing the direction of engine
B. transferring wagons to and from parallel tracks without shunting
C. separating all the sidings and shunting lines from main lines
D. preventing the vehicles from running off the track
A. 70/R
B. 52.5/R
C. 35/R
D. 105/R
where R is radius of curve
A. equilibrium speed
B. speeds higher than equilibrium speed
C. speeds lower than equilibrium speed
D. booked speed
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. to ensure that each switch is correctly set
B. to ensure that the point may not be operated while the train is on it
C. to detect any obstruction between and tongue rail
D. none of the above