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Electric Circuits

Electric Circuits
To apply reciprocity theorem response to excitation ratio is

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

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Electric Circuits
Three identical resistor are connected in star across a 3 phase 550 V supply dissipating a total power of 300 W the line current is ____________ A.

 1
 2.56
 0.5
 3.149

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Electric Circuits
A constant current source supplies a electric current of 300 mA to a load of 1 KΩ. When the load changed to 100 Ω, the load current will be

 300 mA.
 100 mA.
 3 A.
 30 mA.

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Electric Circuits
KVL works on the principle of

 both.
None of these
 law of conservation of energy.
 law of conservation of charge.

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Electric Circuits
Unit of apparent power is

 VA.
 Watts.
 VAR.
 KWhr.

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Electric Circuits
For the circuit shown below the value of R is adjusted so as to make the current in RL equal to zero. Calculate the value of R.

 2 Ω.
 1 Ω.
 4 Ω.
 3 Ω.

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