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Electric Circuits

Electric Circuits
A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is

 0.2 F
 0.02 F
 0.05 F
 0.5 F

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Electric Circuits
How many 200W / 220V bulbs connected in series across 220V supply will consume 100W?

 Not possible.
 2.
 4.
 1.

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

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Electric Circuits
If a resistor and an inductor are connected in series across a voltage source. Which two parameters in that circuit increase if frequency of voltage source increases?

 Z and I.
 VL and I.
 VL and VR.
 VL and Z.

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Electric Circuits
Condition for reciprocity in case of ABCD parameters is

 AD-BC = 0.
 AD-BC = 1 .
 AB-CD = 1.
  AB-CD = 0.

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Electric Circuits
A 50 μF capacitor is charged to retain 10 MJ of energy by a constant charging current of 1 A. Determine the voltages across the capacitor?

 30 V.
 20 V.
 50 V.
 60 V.

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