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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