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    Objective Questions

    Objective Questions on Electric Traction – 1

    • Categories Objective Questions
    1. Overall efficiency of steam locomotive system is close to


    (A) 5 to 10%

    (B) 25 to 30%
    (C) 55 to 60%
    (D) 75 to 80%.



    2. In a steam locomotive electric power is provided through


    (A) battery system

    (B) diesel engine generator
    (C) overhead wire
    (D) small turbo generator.



    3. Maximum horse power of steam locomotive is


    (A) 100

    (B) 500
    (C) 1500
    (D) 2500.



    4. The pressure of steam in a locomotive is


    (A) 10-15 kg/cm2

    (B) 20 – 30 kg/cm2
    (C) 40 – 50 kg/cm2
    (D) 80 – 90 kg/cm2.



    5. The efficiency of diesel locomotives is nearly


    (A) 20 – 25 percent

    (B) 35 – 40 percent
    (C) 50 – 55 percent
    (D) 70 – 75 percent.



    6. The advantage of electric traction over other methods is


    (A) no pollution problems

    (B) faster acceleration
    (C) better braking action
    (D) all of the above.



    7. Suburban railways use


    (A) 1500 V DC

    (B) 440 V three phase AC
    (C) 660 V three phase AC
    (D) 3.3 kV three phase AC.



    8. Long distance railways use


    (A) 200 V DC

    (B) 25 kV Single phase AC
    (C) 25 kV Two phase AC
    (D) 25 kV Three phase AC.



    9. The range of horsepower for diesel locomotives is


    (A) 100 to 500

    (B) 500 to 1000
    (C) 1500 to 2500
    (D) 4000 to 5500.



    10. Steam Engine provided on steam locomotives is


    (A) Single acting condensing type

    (B) double acting condensing type
    (C) double acting non – condensing type
    (D) single acting non condensing type.



    11. A submarine while moving under water, is provided driving power through


    (A) diesel engines

    (B) steam turbine
    (C) gas turbine
    (D) batteries.



    12. Overload capacity of diesel engines is usually restricted to

    (A) 1 %

    (B) 10%
    (C) 25%
    (D) 50%.



    13. Which locomotive has the highest operational availability


    (A) Diesel

    (B) Electric
    (C) Steam
    (D) All have same availability.



    14. Which motor is used in tramways


    (A) AC single phase capacitor start motor

    (B) AC three phase motor
    (C) DC series motor
    (D) DC shunt motor.

    MCQ


    15. A drive suitable for mines where explosive gas exist, is


    (A) Diesel engine

    (B) Steam engine
    (C) Battery locomotive
    (D) Any of the above.

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