Electrical Engineering MCQs

Page No. 316

_______________are the conductors, which connect the consumer’s terminals to the distribution?


a Distributors

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bService mains

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cFeeders

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d None of the above

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View Answer Service mains

By which of the following systems electric power may be transmitted ?


aOverhead system

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bUnderground system

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c Both A. and (b)

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dNone of the above

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View Answer Both A. and (b)

When a live conductor of public electric supply breaks down and touches the earth which of the following will happen?


aCurrent will flow to earth

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b Supply voltage will drop

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cSupply voltage will increase

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dNone of the above

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The skin effect of a conductor will reduce as the__________?


aresistivity of conductor material increases

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bpermeability of conductor material increases

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c diameter increases

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d frequency increases

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The following system is not generally used?


a1-phase 3 wire

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b 1-phase 4 wire

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c3-phase 3 wire

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d3-phase 4 wire

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View Answer 1-phase 3 wire

When a conductor carries more current on the surface as compared to core, it is due to___________?


a permeability variation

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b corona

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c skin effect

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d unsymmetrical fault

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View Answer skin effect

The voltage regulation in magnetic amplifier type voltage regulator is effected by__________?


aelectromagnetic induction

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bvarying the resistance

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c varying the reactance

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d variable transformer

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Series capacitors on transmission lines are of little use when the load VAR requirement is___________?


a large

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bsmall

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cfluctuating

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d any of the above

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View Answer small

Electro-mechanical voltage regulators are generally used in___________?


areactors

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bgenerators

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c transformers

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d all of the above

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View Answer generators

The angular displacement between two interconnected stations is mainly due to___________?


aarmature reactance of both alternators

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breactance of the interconnector

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c synchronous reactance of both the alternators

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d all of the above

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