Electrical Engineering MCQs

Page No. 1

A turbine is tripped when ?


ainlet pressure increase

✖


bspeed shoots up

✓


cexhaust gets choked

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dsteam flow gets clogged

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View Answer speed shoots up

If the distance between the two point charges become half then force between them becomes______________?


adouble

✖


b half

✖


cfour times

✓


dremains same

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View Answer four times

The electric charge of 100 °C is 13cm apart from another charge 16.9°C electric force between them is_____________?


a9x107N

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b 900N

✓


c 9x105N

✖


d9x106N

✖


View Answer 900N

Two charges are placed at a certain distance. If the magnitude of each charge is doubled the force will become_____________?


a1/4th of its original value

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b1/8th of its original value

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c4 times of its original value

✓


d8 times of its original value

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An electric field can deflect_______________?


aNeutrons

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bX-rays

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cBoth glass rod and silk acquire a negative charge

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dNone

✓


View Answer None

Electric flux linked with a surface will be maximum when____________?


aThe surface is held parallel to the electric field

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bThe surface is held perpendicular to the electric field

✓


cThe surface makes an angle of 45°with the field

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dAll of the above

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The electric lines of force are____________?


aimaginary

✓


bphysically existing every where

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cphysically existing near the charges

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ddepends upon case

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View Answer imaginary

If free space between the plates of a capacitor is replaced by a dielectric_____________?


aThe potential difference remains constant capacittance and energy stored increases

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bThe potential difference remains constant capacittance decreases and energy increases

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cThe potential difference decreases but both capacitance and energy increase

✓


dboth potential difference and capacitance decrease but energy increases

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A hollow metallic sphere of 8cm diameter is charged with 4 x 10 8C. The potential on its surface will be_________________?


a 900 volts

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b 9000 volts

✓


c90 volts

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d zero

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View Answer 9000 volts

Potential difference is the work done in moving unit positive charge form one point to another________________?


ain the direction of electric intensity

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bagainst electric intensity

✓


cin any direction

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d in the direction of electric flux

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