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EEE :: Electric Traction

Electric Traction - section-1
Electric Traction - Section-2
  1. In India, electrification of railway track was done for the first time in which of the following years?

    2. A.

     1820 - 1825
    B.

     1880 - 1885
    C.

     1925 - 1932
    D.

     1947 - 1954

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  2. _________ locomotive has the highest operational availability.

    3. A.

     Electric
    B.

     Diesel
    C.

     Steam
    D.

     All of the above

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  3. The return circuit for tram cars is through

    4. A.

     Neutral wire
    B.

     Rails
    C.

     Cables
    D.

     Common earthing

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  4. ________ have maximum unbalanced forces

    5. A.

     Diesel saunters
    B.

     Steam locomotives
    C.

     Electric locomotives
    D.

     Diesel locomotives

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  5. The braking retardation is usually in the range

    6. A.

     0.15 to 0.30 km phps
    B.

     0.30 to 0.6 km phps
    C.

     0.6 to 2.4 km phps
    D.

     3 to 5 km phps

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  6. If the coefficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails?

    7. A.

     0.3
    B.

     0.26
    C.

     0.225
    D.

     0.16

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  7. The rate of acceleration on suburban or urban service is in the range

    8. A.

     0.2 to 0.5 km phps
    B.

     1.6 to 4.0 km phps
    C.

     5 to 10 km phps
    D.

     15 to 25 km phps

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  8. In tram ways which of the following motors is used?

    9. A.

     D.C. shunt motor
    B.

     D.C. series motor
    C.

     A.C. three phase motor
    D.

     AC. single phase capacitor start motor

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  9. Which of the following drives is suitable for mines where explosive gas exists?

    10. A.

     Steam engine
    B.

     Diesel engine
    C.

     Battery locomotive
    D.

     Any of the above

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