Electric Traction Quiz | Electric Traction Multiple Choice Questions with Answers

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Questions
61 The coasting retardation is around
A 0.16 km phps
B 1.6 km phps
C 16 km phps
D 40 km phps

Answer: 0.16 km phps
62 The rate of acceleration on suburban orurban service is in the range
A 0.2 to 0.5 km phps
B 1.6 to 4.0 km phps
C 5 to 10 km phps
D 15 to 25 km phps

Answer: 1.6 to 4.0 km phps
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63 The braking retardation is usually in the range
A 0.15 to 0.30 km phps
B 0.30 to 0.6 km phps
C 0.6 to 2.4 km phps
D 3 to 5 km phps

Answer: 3 to 5 km phps
64 watt-hours per tonne km is usually the specific energy consumption for suburban services.
A 15—20
B 50—75
C 120—150
D 160—200

Answer: 50—75
65 If the co-efficient 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

Answer: 0.16
66 Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction ?
A Reduced current method
B Tap changing control of transformer
C Series parallel operation of motors
D All of the above

Answer: Tap changing control of transformer
67 For which of the following locomotives the maintenance requirements are the least?
A Steam locomotives
B Diesel locomotives
C Electric locomotives
D Equal in all of the above

Answer: Diesel locomotives
68 Which of the following happens in Kando system ?
A Three phase A.C. is converted into D.C.
B Single phase A.C. is converted into D.C.
C Single phase supply is converted into three phase system
D None of the above

Answer: Single phase supply is converted into three phase system
69 In case of a steam engine an average coal consumption per km is nearly
A 150 to 175 kg
B 100 to 120 kg
C 60 to 80 kg
D 28 to 30 kg

Answer: 28 to 30 kg
70 Suri transmission is
A electrical-pneumatic
B mechanical-electrical
C hydro-mechanical
D hydro-pneumatic

Answer: hydro-mechanical
71 In India, electrification of railway track was done for the first time in which of the following years ?
A 1820—1825
B 1880—1885
C 1925—1932
D 1947—1954

Answer: 1925—1932
72 Power for lighting in passanger 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

Answer: through individual generator of bogie and batteries
73 For 25 kV single phase system power supply frequency is
A 60 Hz
B 50 Hz
C 25 Hz
D 16 Hz

Answer: 50 Hz
74 _______ frequency is not common in low frequency traction system
A 40 Hz
B 25 Hz
C 16 Hz
D None

Answer: 40 Hz
75 _______ was the first city in India to adopt electric traction.
A Delhi
B Madras
C Calcutta
D Bombay

Answer: Bombay
76 Locomotives with monometer bogies have
A uneven distribution of tractive effect
B suitability for passanger as well as freight service
C lot of skidding
D low co-efficient of adhesion

Answer: suitability for passanger as well as freight service

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