Electrical Engineering MCQs

Page No. 197

A field line and an equipotential surface are____________?


aalways parallel

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balways at 90°

✓


cinclined at any angle 0

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dnone of the above

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View Answer always at 90°

The force between two charges is 120 N. If the distance between the charges is doubled, the force will be________________?


a60 N

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b30 N

✓


c 40 N

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d15 N

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View Answer 30 N

The ability of charged bodies to exert force on 6ne another is attributed to the existence of____________?


aelectrons

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bprotons

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cneutrons

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delectric field

✓


View Answer electric field

For making a capacitor, it is better to select a dielectric having___________?


alow permittivity

✖


bhigh permittivity

✓


cpermittivity same as that of air

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dpermittivity slightly more than that of air

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View Answer high permittivity

In alkaline cell the electrolyte is_____________?


adilute sulphuric acid

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bconcentrated sulphuric acid

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c NaOH

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dKOH

✓


View Answer KOH

A typical output of a solar cell is_____________?


a 0.1V

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b0.26 V

✓


c1.1 V

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d1.1 V

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View Answer 0.26 V

A constant-voltage generator has___________?


aminimum efficiency

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b minimum current capacity

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clow internal resistance

✓


dhigh internal resistance

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Which of the following factors adversely affects the capacity of the leadacid battery ?


aTemperature of surroundings

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bSpecific gravity of electrolyte

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cRate of discharge

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dAll of the above

✓


View Answer All of the above

In a lead-acid battery the energy is stored in the form of___________?


acharged ions

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b chemical energy

✓


celectrostatic energy

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delectromagnetic energy

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View Answer chemical energy

Satellite power requirement is provided through________?


asolar cells

✓


bdry cells

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cnickel-cadmium cells

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dlead-acid batteries

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View Answer solar cells

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