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Electric Traction

Study 74 Electrical Engineering MCQs with correct answers and explanations.

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1Electrical EngineeringMedium

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

ARegenerative braking on electric locomotives

BVacuum braking on steam locomotives

CAll braking systems are equally costly

DVacuum braking on diesel locomotives

Correct answer

A. Regenerative braking on electric locomotives

Explanation

The correct answer is Regenerative braking on electric locomotives.

2Electrical EngineeringMedium

In case of ________ free running and coasting periods are generally long?

Aurban service

Bmain-line service

Call of the above

Dsub-urban service

Correct answer

B. main-line service

Explanation

The correct answer is main-line service.

3Electrical EngineeringMedium

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

Amore than that of D.C. locomotive

Bequal to that of D.C. locomotive

Cnone of the above

Dless than that of D.C. locomotive

Correct answer

A. more than that of D.C. locomotive

Explanation

The correct answer is more than that of D.C. locomotive.

4Electrical EngineeringMedium

Electric locomotives in India are manufactured at________?

AChittranjan

BGorakhpur

CBangalore

DJamalpur

Correct answer

A. Chittranjan

Explanation

The correct answer is Chittranjan.

5Electrical EngineeringMedium

Specific energy consumption is affected by which of the following factors?

AAll of the above

BGradient

CRetardation and acceleration values

DDistance between stops

Correct answer

A. All of the above

Explanation

The correct answer is All of the above.

6Electrical EngineeringMedium

Quadrilateral speed-time curve pertains to which of the following services?

AUrban and sub-urban service

BSub-urban service

CUrban service

DMain line service

Correct answer

A. Urban and sub-urban service

Explanation

The correct answer is Urban and sub-urban service.

7Electrical EngineeringMedium

Power for lighting in passanger coach, in a long distance electric train, is provided________?

Athrough individual generator of bogie and batteries

Bthrough rails

Cthrough locomotive

Ddirectly through overhead electric line

Correct answer

A. through individual generator of bogie and batteries

Explanation

The correct answer is through individual generator of bogie and batteries.

8Electrical EngineeringMedium

The voltage used for suburban trains in D.C. system is usually________?

A24 V

B220 V

C600 to 750 V

D12 V

Correct answer

C. 600 to 750 V

Explanation

The correct answer is 600 to 750 V.

9Electrical EngineeringMedium

For diesel locomotives the range of horsepower is________?

A1500 to 2500

B3000 to 5000

C500 to 1000

D50 to 200

Correct answer

A. 1500 to 2500

Explanation

The correct answer is 1500 to 2500.

10Electrical EngineeringMedium

Series motor is not suited for traction duty due to which of the following account?

ASelf relieving property

BLess current drain on the heavy load torque

CCommutating property at heavy load

DCurrent surges after temporary switching off supply

Correct answer

D. Current surges after temporary switching off supply

Explanation

The correct answer is Current surges after temporary switching off supply.

Series motor is not suited for traction duty due to which of the following account?

ASelf relieving property

BLess current drain on the heavy load torque

CCommutating property at heavy load

DCurrent surges after temporary switching off supply

Correct answer

D. Current surges after temporary switching off supply

Explanation

The correct answer is Current surges after temporary switching off supply.