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Electric Circuits

Electric Circuits
In RL series circuit R=2Ω and L=10mH and applied voltage is 10V DC. Then find the current in the network?

 1A
 0A
 10A
 5A

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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 value of C?

 1.8 µF.
 8.51 µF.
 4.78 µF.
 10.54 µF.

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Electric Circuits
R1 = 36 Ω and R2 = 75 Ω, each having tolerance of ±5% are connected in series. The value of resultant resistance is

  111 ± 0 Ω.
  111 ± 5.55 Ω.
 111 ± 7.23 Ω.
 111 ± 2.77 Ω.

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Electric Circuits
What is the real power in AC operation?

 VIcosφ.
 None of these.
 Apperant power × cosφ.
 Both option A and B.

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Electric Circuits
In question no.3, which of the following is true ?

 iL(0) = ic (0).
 i(0+)= iL(0+).
 None of these.
 ic (0+) = i(0+).

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Electric Circuits
Electrics supply for electroplating should be

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

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