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Electric Circuits

Electric Circuits
Given network is having N nodes and b branches, then number of individual loops are

 N - 1.
 N.
 b - N + 1.
 b - N - 1.

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Electric Circuits
The energy required to charge a 10 μF capacitor to 100 V is

 5 × 10-9 J.
 10 × 10-9 J.
 0.01 J.
 0.05 J.

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Electric Circuits
Which of following is invariably seen in an electroplating plant?

  Rectifier.
  Barrel.
  Distilled water.
  Carbon brushes.

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Electric Circuits
The alternative names for active power is/are

All of these
 real power.
 average power.
 true power.

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Electric Circuits
Electrics supply for electroplating should be

 low frequency ac voltage.
 any of above.
 DC voltage.
 low AC voltage.

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Electric Circuits
A parallel plate capacitor contain there dielectric layers of 1, 2 and 3 respectively and thickness of dielectric layers are 0.2 mm, 0.3 mm and 0.4 mm respectively. If area of plate is 20 cm2. What is the value of capacitance?

 36.6 pF.
 30 pF.
 32 pF.
 None of them.

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