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EEE :: Electric Traction

  1. In case of a steam engine an average coal consumption per km is nearly

  2. A.

     150 to 175 kg

    B.

     100 to 120 kg

    C.

     60 to 80 kg

    D.

     28 to 30 kg


  3. The speed of a locomotive is controlled by

  4. A.

     Flywheel

    B.

     Gear box

    C.

     Applying brakes

    D.

     Regulating steam flow to engine


  5. The friction at the track is proportional to

  6. A.

     1/speed

    B.

     1/(speed)²

    C.

     Speed

    D.

     None of the above


  7. When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when

  8. A.

     Wheel base of axles is more

    B.

     Degree of curvature is more

    C.

     Both (A) and (B)

    D.

     None of the above


  9. The overall efficiency of steam locomotive is around

  10. A.

     5 to 10 percent

    B.

     15 to 20 percent

    C.

     25 to 35 percent

    D.

     35 to 45 percent


  11. For which of the following locomotives the maintenance requirements are the least?

  12. A.

     Steam locomotives

    B.

     Diesel locomotives

    C.

     Electric locomotives

    D.

     Equal in all of the above


  13. Which of the following is an advantage of electric traction over other methods of traction?

  14. A.

     Faster acceleration

    B.

     No pollution problems

    C.

     Better braking action

    D.

     All of the above


  15. Methods can bring the locomotive to dead stop.

  16. A.

     Plugging braking

    B.

     Rheostat braking

    C.

     Regenerative braking

    D.

     None of the above


  17. Which of the following state capitals (in India) is not on broad gauge track?

  18. A.

     Lucknow

    B.

     Bhopal

    C.

     Jaipur

    D.

     Chandigarh


  19. The air resistance to the movement of the train is proportional to

  20. A.

     speed

    B.

     (speed)2

    C.

     (speed)3

    D.

     1/speed