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Electric Circuits

Electric Circuits
For occurrence of resonance which of the following elements are required?

 R
 L
 Both 2 and 3
 C

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Electric Circuits
What would be the power given by source V2?

 5 W.
 10 W.
 - 5 W.
 0 W.

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Electric Circuits
In an AC circuit, containing pure inductance, the voltage applied is 120 V, 50 Hz while the current is 10 A. Find the value of inductance.

 38 mH.
 34 mH.
 35 mH.
 30 mH.

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Electric Circuits
The resistivity of the conductor depends on

 length of the conductor.
 none of these.
 type of material.
 area of the conductor.

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Electric Circuits
In above question, if circuit efficiency is 90 %. What will be output power ?

  35.6 kW.
  30 kW.
  40 kW.
  37.3 kW.

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Electric Circuits
The arrangement of 12 cells each of internal resistance 1.5 Ohm to give maximum current in external load resistance of 2 Ohm will be

 in 3 parallel rows each row having 4 cells in series.
 all 12 in parallel.
 all 12 in series.
 in 4 parallel rows each row having 3 cells in series.

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