Electrical Engineering MCQs

Page No. 214

The insulating material for cables should____________?


a be acid proof

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bbe non-inflammable

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c be non-hygroscopic

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d have all above properties

✓



The current carrying capacity of cables in D.C. is more than that in A.C. mainly due to__________?


a absence of harmonics

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bnon-existence of any stability limit

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csmaller dielectric loss

✓


dabsence of ripples

✖



cables are used for 132 kV lines____________?


a High tension

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b Super tension

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cExtra high tension

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d Extra super voltage

✓



The bedding on a cable consists of____________?


a hessian cloth

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bjute

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c any of the above

✓


dnone of the above

✖


View Answer any of the above

In a cable immediately above metallic sheath ______ is provided


a earthing connection

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bbedding

✓


c armouring

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d none of the above

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View Answer bedding

Empire tape is__________?


avarnished cambric

✓


b vulcanised rubber

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c impregnated paper

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dnone of the above

✖


View Answer varnished cambric

Which of the following protects a cable against mechanical injury___________?


a Bedding

✖


b Sheath

✖


c Armouring

✓


dNone of the above

✖


View Answer Armouring

The insulating material for a cable should have__________?


alow cost

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b high dielectric strength

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c high mechanical strength

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d all of the above

✓


View Answer all of the above

The thickness of the layer of insulation on the conductor, in cables, depends upon___________?


areactive power

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b power factor

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c voltage

✓


d current carrying capacity

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View Answer voltage

Which of the following insulation is used in cables ?


aVarnished cambric

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bRubber

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cPaper

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d Any of the above

✓


View Answer Any of the above

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