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Electric Circuits

Electric Circuits
To apply reciprocity theorem response to excitation ratio is

 Either Ohm or Mho.
 No units.
 Ohm.
 Mho.

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Electric Circuits
The capacitance of a parallel plate capacitor can be varied by

All of these
 changing the dielectric medium only.
 changing the distance between the plates only.
 changing the overlapping area of the plates only.

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Electric Circuits
Absolute permittivity of dielectric medium is represented as

 ε0
 εr/ε0
 εr
 εrε0

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Electric Circuits
In series RLC circuit what is the power factor just bellow the resonance frequency?

 Lagging
 Zero
 Leading
 Unity

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Electric Circuits
The rms value of the resultant current in a wire which carries a DC current of 10A and a sinusoidal current of peak value 20A is

 22.4A.
 17.3A .
 14.14A.
 30A.

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Electric Circuits
For same voltage, the ratio resistance of 100 W lamp to resistance of 25 W lamp is

 16.
 1.
 4.
 1/4.

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