Electrical Engineering MCQs

Page No. 49

Due to which of the following co-efficient of adhesion improves ?


a Rust on the rails

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b Dust on the rails

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cSand on the rails

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dAll of the above

✓


View Answer All of the above

For given maximum axle load tractive efforts of AC. locomotive will be_____________?


aless than that of D.C. locomotive

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bmore than that of D.C. locomotive

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cequal to that of D.C. locomotive

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dnone of the above

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Which of the following is the advantage of electric braking ?


aIt avoids wear of track

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bMotor continues to remain loaded during braking

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cIt is instantaneous

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dMore heat is generated during braking

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The speed of a superfast train is______________?


a60 kmph

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b75 kmph

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c100 kmph

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dmore than 100 kmph

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View Answer more than 100 kmph

Which of the following braking systems on the locomotives is costly ?


aRegenerative braking on electric locomotives

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bVacuum braking on diesel locomotives

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c Vacuum braking on steam locomotives

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dAll braking systems are equally costly

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The number of passenger coaches that can be attached to a diesel engine locomotive on broad gauge is usually restricted to_____________/


a5

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b10

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c14

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d 17

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View Answer 10

In tramways which of the following motors is used ?


aD.C. shunt motor

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bD.C. series motor

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cA.C. three phase motor

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dAC. single phase capacitor start motor

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View Answer D.C. series motor

In case of locomotives the tractive power is provided by______________?


asingle cylinder double acting steam engine

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b double cylinder, single acting steam engine

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cdouble cylinder, double acting steam engine

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dsingle stage steam turbine

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The steam engine provided on steam locomotives is____________?


asingle acting condensing type

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b single acting non-condensing type

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cdouble acting condensing type

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d double acting non-condensing type

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Automatic signalling is used for which of the following trains ?


aMail and express trains

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bSuperfast trains

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cSuburban and Urban electric trains

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dAll trains

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View Answer Superfast trains

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