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Electric Traction
The rate of acceleration on sub-urban or urban services is restricted by the consideration of
Track curves
Track size
Engine power
Passenger Discomfort
Track curves
Track size
Engine power
Passenger Discomfort
Answer
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Related Question
Electric Traction
Vacuum is created by which of the following?
None of the listed here
Any of the listed here
Ejector
Vacuum pump
None of the listed here
Any of the listed here
Ejector
Vacuum pump
Answer
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Electric Traction
Quadrilateral speed-time curve pertains to which of the following services?
Main line service
Urban service
Suburban service
Urban and suburban service
Main line service
Urban service
Suburban service
Urban and suburban service
Answer
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Electric Traction
For given maximum axle load tractive efforts of AC. locomotive will be
None of the listed here
Less than that of D.C. locomotive
More than that of D.C. locomotive
Equal to that of D.C. locomotive
None of the listed here
Less than that of D.C. locomotive
More than that of D.C. locomotive
Equal to that of D.C. locomotive
Answer
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Electric Traction
Which of the following is the disadvantage of electric traction over other systems of traction?
Interference with communication lines
Corrosion problems in the underground pipe work
Short time power failure interrupts traffic for hours
High capital outlay in fixed installations beside route limitation
Interference with communication lines
Corrosion problems in the underground pipe work
Short time power failure interrupts traffic for hours
High capital outlay in fixed installations beside route limitation
Answer
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Electric Traction
For three-phase induction motors which of the following is the least efficient method of speed control?
Cascade control
Rheostat control
Pole changing
Combination of cascade and pole changing
Cascade control
Rheostat control
Pole changing
Combination of cascade and pole changing
Answer
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