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Electric Circuits

Electric Circuits
For the circuit given in the figure the power delivered by the 2 V source is given by

 - 2 W.
 - 4 W.
 4 W.
 2 W.

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Electric Circuits
If the sheet of a backelite is inserted between the plates of an air capacitor, the capacitance will

 decrease.
 increase.
 remains unchanged.
 becomes zero.

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Electric Circuits
A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the current in the circuit?

 0.4583 A.
 0.2547 A.
 0.1465 A.
 0.1578 A.

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Electric Circuits
For balanced star load, if unbalanced line current are IR, IY, IB equal to - j10, - j10 and - j20 respectively, the neutral current will be equal to

  (-8.66 - j5) A.
  (-9.66 + j5) A.
  (8.66 + j5) A.
  (8.66 - j5) A.

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Electric Circuits
Form factor is equal to Peak factor in case of

 triangle wave.
 saw tooth wave.
 square wave.
All of these

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

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

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MORE MCQ ON Electric Circuits

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