Category: Electric Traction

A. 200 V D.C.
B. 25 kV single phase A.C.
C. 25 kV two phase A.C.
D. 25 kV three phase A.C.

A. 0.3
B. 0.26
C. 0.225
D. 0.16

A. 22 V
B. 440 V
C. 5 kV
D. 15 kV
E. None of the above

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

A. Less current drain on the heavy load torque
B. Current surges after temporary switching off supply
C. Self relieving property
D. Commutating property at heavy load

A. 60 Hz
B. 50 Hz
C. 25 Hz
D. 16 Hz

A. 5 to 10 percent
B. 15 to 20 percent
C. 25 to 35 percent
D. 35 to 45 percent

A. 1 to 4 kgf/cm2
B. 5 to 8 kgf/cm2
C. 10 to 15 kgf/cm2
D. 25 to 35 kgf/cm2

A. 0.12
B. 0.25
C. 0.40
D. 0.75

A. Plugging braking
B. Rheostatic braking
C. Regenerative braking
D. None of the above