Electrical Engineering Electric Traction MCQ - Set 03 - ObjectiveBooks

Electrical Engineering Electric Traction MCQ - Set 03

Practice Test: Question Set - 03

1. Overhead lines for power supply to tram cars are at a minimum height of
    (A) 3 m
    (B) 6 m
    (C) 10 m
    (D) 15 m

2. Power for lighting in passenger coach, in a long distance electric train, is provided
    (A) Directly through overhead electric line
    (B) Through individual generator of bogie and batteries
    (C) Through rails
    (D) Through locomotive

3. If the coefficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails?
    (A) 0.3
    (B) 0.26
    (C) 0.225
    (D) 0.16

4. Which of the following is an advantage of electric traction over other methods of traction?
    (A) Faster acceleration
    (B) No pollution problems
    (C) Better braking action
    (D) All of the above

5. _________ locomotive has the highest operational availability.
    (A) Electric
    (B) Diesel
    (C) Steam
    (D) All of the above

6. In case of locomotives the tractive power is provided by
    (A) Single cylinder double acting steam engine
    (B) Double cylinder, single acting steam engine
    (C) Double cylinder, double acting steam engine
    (D) Single stage steam turbine

7. The number of passenger coaches that can be attached to a diesel engine locomotive on broad gauge is usually restricted to
    (A) 5
    (B) 10
    (C) 14
    (D) 17

8. Which of the following is the disadvantage of electric traction over other systems of traction?
    (A) Corrosion problems in the underground pipe work
    (B) Short time power failure interrupts traffic for hours
    (C) High capital outlay in fixed installations beside route limitation
    (D) Interference with communication lines

9. Vacuum is created by which of the following?
    (A) Vacuum pump
    (B) Ejector
    (C) Any of the above
    (D) None of the above

10. Energy consumption in propelling the train is required for which of the following?
    (A) Work against the resistance to motion
    (B) Work against gravity while moving up the gradient
    (C) Acceleration
    (D) All of the above

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