Electric Traction Mcqs
This set of Electrical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “ Electric Traction ”. These questions are chosen from a collection of most authoritative and best reference books on Electrical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Electric Traction comprehensively.
62. Locomotives with monometer bogies have_________________?
Uneven distribution of tractive effect
Suitability for passanger as well as freight service
Lot of skidding
Low co-efficient of adhesion
Answer & Solution
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63. For 25 kV single phase system power supply frequency is_______________?
60 Hz
50 Hz
25 Hz
16 Hz
64. Suri transmission is_________________?
Electrical-pneumatic
Mechanical-electrical
Hydro-mechanical
Hydro-pneumatic
Answer & Solution
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65. In case of a steam engine an average coal consumption per km is nearly________________?
150 to 175 kg
100 to 120 kg
60 to 80 kg
28 to 30 kg
Answer & Solution
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66. For which of the following locomotives the maintenance requirements are the least ?
Steam locomotives
Diesel locomotives
Electric locomotives
Equal in all of the above
Answer & Solution
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67. Power for lighting in passanger coach, in a long distance electric train, is provided_________________?
Directly through overhead electric line
Through individual generator of bogie and batteries
Through rails
Through locomotive
Answer & Solution
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68. Which of the following happens in Kando system ?
Three phase A.C. is converted into D.C.
Single phase A.C. is converted into D.C.
Single phase supply is converted into three phase system
None of the above
Answer & Solution
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69. If the co-efficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails ?
0.3
0.26
0.225
0.16
70. The coasting retardation is around_________________?
0.16 km phps
1.6 km phps
16 km phps
40 km phps
Answer & Solution
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71. The braking retardation is usually in the range__________________?
0.15 to 0.30 km phps
0.30 to 0.6 km phps
0.6 to 2.4 km phps
3 to 5 km phps
Answer & Solution
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72. Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction ?
Reduced current method
Tap changing control of transformer
Series parallel operation of motors
All of the above
Answer & Solution
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73. The rate of acceleration on suburban orurban service is in the range_________________?
0.2 to 0.5 km phps
1.6 to 4.0 km phps
5 to 10 km phps
15 to 25 km phps
Answer & Solution
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74. _______________watt-hours per tonne km is usually the specific energy consumption for suburban services?
15—20
50—75
120—150
160—200