The pulsating torque exerted by steam locomotives causes which of the following?
Answer: Jolting and skidding
The normal value of adhesion friction is
The air resistance to the movement of the train is proportional to
The friction at the track is proportional to
The specific energy consumption of a train depends on which of the following ?
The rate of acceleration on suburban orurban services is restricted by the consideration of
Answer: Passenger Discomfort
Speed-time curve of main line service differs from those of urban and suburban services on following account
Co-efficient of adhesion is
Answer: low in case of D.C. traction than in the case of AC. traction
Which of the following is the disadvantage of electric traction over other systems of traction ?
Answer: High capital outlay in fixed installations beside route limitation
Quadrilateral speed-time curve pertains to which of the following services ?
Answer: Urban and sub-urban service
Due to which of the following co-efficient of adhesion improves ?
Co-efficient of adhesion reduces due to the presence of which of the following ?
For given maximum axle load tractive efforts of AC. locomotive will be
Answer: more than that of D.C. locomotive
Tractive effort is required to
Answer: do all of the above
Which of the following braking systems on the locomotives is costly ?
Answer: Regenerative braking on electric locomotives
Which of the following is the advantage of electric braking ?
Answer: It avoids wear of track
Which of the following state capitals is not on broad gauge track ?
The number of passenger coaches that can be attached to a diesel engine locomotive on broad gauge is usually restricted to
The speed of a superfast train is
Answer: more than 100 kmph
The efficiency of diesel locomotives is nearly