Electrical Engineering MCQs

Page No. 184

Which of the following capacitors is marked for polarity ?


aAir

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bPaper

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cMica

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d Electrolytic

✓


View Answer Electrolytic

The power dissipated in a pure capacitor is______________?


azero

✓


bproportional to applied voltage

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cproportional to value of capacitance

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dboth (B) and (C) above

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View Answer zero

When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will______________?


aremain uncharged

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bdecrease

✓


cincrease

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d become zero

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View Answer decrease

A capacitor consists of_____________?


a two insulators separated by a conductor

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b two conductors separated by an insulator

✓


ctwo insulators only

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dtwo conductors only

✖



A paper capacitor is usually available in the form of_____________?


atubes

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brolled foil

✓


cdisc

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d meshed plates

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View Answer rolled foil

The absolute permittivity of free space is given by_____________?


a8.854 x 1(T9 F/m)

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b8.854 x 1(T10 F/m)

✓


c 8.854 x KT11 F/m

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d8.854 x 10″12 F/m

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View Answer 8.854 x 1(T10 F/m)

Which of the following capacitors can be used for temperature compensation ?


aAir capacitor

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b Ceramic capacitor

✓


cPaper capacitor

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dNone of the above

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View Answer Ceramic capacitor

The value of dielectric constant for vacuum is taken as____________?


azero

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b 1

✓


c4

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d10

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View Answer 1

While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is____________?


a short-circuited

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bopen circuited

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calright

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d leaky

✓


View Answer leaky

Electric field intensity is a quantity_____________?


a scalar

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bvector

✓


cboth A. and (6)

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dnone of the above

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View Answer vector

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