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Electric Circuits

Electric Circuits
An equipotential surface is one which has all points at _____________ potential.

 different.
 none of them.
 same.
 zero.

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Electric Circuits
Container of a lead acid battery

 ceramics.
 molded hard rubber.
 celluloid.
 any of above.

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Electric Circuits
In given figure, the value of resistance R in Ω is

 2.5 Ω
 1 Ω
 4.5 Ω
 3.5 Ω

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Electric Circuits
The efficiency in case of maximum power transfer theorem is

 100 %.
 50 %.
 less than 50 %.
 50 % - 100 %.

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Electric Circuits
The resistivity of semi-conductors at room temperatures is

 0.01 to 50 ohm - cm.
 109 to 1012 ohm - cm.
 1000 to 1500 ohm - cm.
 1.6 × 106 to 100 × 106 ohm - cm.

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Electric Circuits
An electrical motor has rating of 10 MVA at 0.8 lag, represented as series RL circuit at a 50 MVA base. Find the impedance value?

 (4 + j3) pu
 (3 + j4) pu
 (4 + j2 ) pu
 (2 + j4) pu

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MORE MCQ ON Electric Circuits

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