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Electric Traction
Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction?
Reduced current method
Series parallel operation of motors
All of the listed here
Tap changing control of transformer
Reduced current method
Series parallel operation of motors
All of the listed here
Tap changing control of transformer
Answer
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Related Question
Electric Traction
Which of the following is the disadvantage of electric traction over other systems of traction?
Interference with communication lines
High capital outlay in fixed installations beside route limitation
Corrosion problems in the underground pipe work
Short time power failure interrupts traffic for hours
Interference with communication lines
High capital outlay in fixed installations beside route limitation
Corrosion problems in the underground pipe work
Short time power failure interrupts traffic for hours
Answer
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Electric Traction
Which of the following state capitals (in India) is not on broad gauge track?
Chandigarh
Bhopal
Jaipur
Lucknow
Chandigarh
Bhopal
Jaipur
Lucknow
Answer
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Electric Traction
The rate of acceleration on sub-urban or urban services is restricted by the consideration of
Track size
Track curves
Passenger Discomfort
Engine power
Track size
Track curves
Passenger Discomfort
Engine power
Answer
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Electric Traction
_________ frequency is not common in low frequency traction system
40 Hz
None of the listed here
25 Hz
16 Hz
40 Hz
None of the listed here
25 Hz
16 Hz
Answer
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Electric Traction
Vacuum is created by which of the following?
Ejector
None of the listed here
Any of the listed here
Vacuum pump
Ejector
None of the listed here
Any of the listed here
Vacuum pump
Answer
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