1. In a traction system, the distance between two stations is 1 km and the schedule speed is 30 kmph. Station stop time is 20 sec. Calculate the average speed. (Assume speed time curve is approximated by a trapezoidal curve)
Answer : 36 kmph
Explain:-
2. The factor(s) which affects the specific energy consumption in a traction system, for a given scheduled speed
Answer : The acceleration and retardation
Explain:-
3. Quadrilateral speed time curve is used for
Answer : Urban service only
Explain:-
4. Because of _______ steam engine drive in a traction system is being gradually replaced by either diesel straight electric system
Answer : Low coefficient of adhesion
Explain:-
5. Which of the following is important for driving used for traction purpose
(a) High coefficient adhesion
(b) Low coefficient adhesion
(c) Wear caused on the brake shoes and wheel tyres should be minimum
(d) Pollution free
Answer : (b) and (d) only
Explain:-
6. The main requirements of traction motor is
Answer : Easy speed control
Explain:-
7. The symbol X represents
Answer : Ceiling mounted lamp
Explain:-
8. Which Indian Electricity rules pertains to clearance above ground of the lowest conductor of power lines
Answer : 77
Explain:-
9. Normal area of 7/20 SWG copper conductor is
Answer : 4.5 sq.mm
Explain:-
10. HRC stands for
Answer : High rupturing capacity
Explain:-
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