A. electrical-pneumatic
B. mechanical-electrical
C. hydro-mechanical
D. hydro-pneumatic
Related Mcqs:
- Long distance transmission is easy for________________?
A. D.C voltage
B. A.C voltage
C. Half A.C voltage
D. Half D.C voltage - For long distance transmission the transformer used is_____________?
A. Step down
B. Input voltage and output voltage remain same
C. Step up
D. Amplifier is used - The wheels of a train, engine as well as bogies, are slightly tapered to_____________?
A. reduce friction
B. increase friction
C. facilitate braking
D. facilitate in taking turns - Main traction systems used in India are, those using______________?
A. electric locomotives
B. diesel engine locomotives
C. steam engine locomotives
D. diesel electric locomotives
E. all of the above - The speed of a superfast train is______________?
A. 60 kmph
B. 75 kmph
C. 100 kmph
D. more than 100 kmph - Co-efficient of adhesion reduces due to the presence of which of the following ?
A. Sand on rails
B. Dew on rails
C. Oil on the rails
D. both B. and C. - For three-phase induction motors which of the following is the least efficient method of speed control ?
A. Cascade control
B. Pole changing
C. Rheostat control
D. Combination of cascade and pole changing - The resistance encountered by a train in motion is on account of_________________?
A. resistance offered by air
B. friction at the track
C. friction at various parts of the rolling stock
D. all of the above - An ideal traction system should have_______________?
A. easy speed control
B. high starting tractive effort
C. equipment capable of with standing large temporary loads
D. all of the above - Locomotives with monometer bogies have_________________?
A. uneven distribution of tractive effect
B. suitability for passanger as well as freight service
C. lot of skidding
D. low co-efficient of adhesion
