Railway Engineering

A. equilibrium speed
B. speeds higher than equilibrium speed
C. speeds lower than equilibrium speed
D. booked speed

A. cubic parabola
B. spiral
C. sine curve
D. lemniscate of Bernoulli

A. 1600/R
B. 1700/R
C. 1750/R
D. 1850/R

where R is the radius of curve in meters

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. Vi cot(cc/2)
B. cot(oc/2)
C. cot(A)
D. Vi cosec(a/2)

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. 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. CL = L – SL
B. L =CL-SL
C. SL = L + CL
D. L = (CL+SL)/2

A. between the adjoining faces of the running rail and the check rail near the crossing
B. between the gauge faces of the stock rail and the tongue rail
C. through which the tongue rail moves laterally at the toe of the switch
D. none of the above

A. detectors
B. point lock
C. iock bar
D. stretcher bar