Electric Traction

A. more on steeper gradient
B. more with high train resistance
C. less if distance between stops is more
D. all of the above

A. greased
B. wet
C. sprayed with oil
D. cleaned with sand

A. Cascade control
B. Pole changing
C. Rheostat control
D. Combination of cascade and pole changing

A. distance between the stops is more
B. maximum speed reached is high
C. acceleration and retardation rates are low
D. all of the above

A. Corrosion problems in the under-ground pipe work
B. Short time power failure interrupts traffic for hours
C. High capital outlay in fixed installations beside route limitation
D. Interference with communication lines
C. All of the above

A. Main line service
B. Urban service
C. Sub-urban service
D. Urban and sub-urban service

A. high in case of D.C. traction than in the case of AC. traction
B. low in case of D.C. traction than in the case of AC. traction
C. equal in both AC. and D.C. traction
D. any of the above

A. Hydraulic system
B. Pneumatic system
C. Vacuum system
D. None of the above

A. Engine power
B. Track curves
C. Passenger Discomfort
D. Track size

A. 1/speed
B. l/(speed)2
C. speed
D. none of the above