Electrical Engineering : Electric Traction QUESTIONS AND ANSWERS :: part2 : 6 to 10
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.Specific energy consumption becomes |
| more on steeper gradient |
| more with high train resistance |
| less if distance between stops is more |
| all of the above |
7.Speed-time curve of main line service differs from those of urban and suburban services on following account |
| it has longer free running period |
| it has longer coasting period |
| accelerating and braking periods are comparatively smaller |
| all of the above |
8.The friction at the track is proportional to |
| 1/speed |
| l/(speed)2 |
| speed |
| none of the above |
9.For three-phase induction motors which of the following is the least efficient method of speed control ? |
| Cascade control |
| Pole changing |
| Rheostatic control |
| Combination of cascade and pole changing |
10.The pulsating torque exerted by steam locomotives causes which of the following? |
| Jolting and skidding |
| Hammer blow |
| Pitching |
| All of the above |
More Electric Traction QUESTIONS AND ANSWERS available in next pages
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