Computer Programming MCQs

5739 MCQs  (Page 526 of 574)

Attempt Computer Programming MCQs Quiz
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
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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
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The coasting retardation is around_________________?
A. 0.16 km phps
B. 1.6 km phps
C. 16 km phps
D. 40 km phps
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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
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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
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Suri transmission is_________________?
A. Electrical-pneumatic
B. Mechanical-electrical
C. Hydro-mechanical
D. Hydro-pneumatic
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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
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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
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________________ frequency is not common in low frequency traction system?
A. 40 hz
B. 25 hz
C. 16 hz
D. Non of these
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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
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Word of the Day
15 Jul
Iterate
perform or utter repeatedly.
دہرانا، چکر

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