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Electric Circuits

Electric Circuits
A wire of resistance R has it length and cross - section both doubled. Its resistance will become

 2R.
 R.
 4R.
 0.5R.

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Electric Circuits
Which of the following materials has highest electrical conductivity ?

  Aluminium.
  Steel.
  Silver.
  Copper.

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

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

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Electric Circuits
What is I1 in the given circuit?

  0.5 A.
  3 A.
  1.5 A.
  1 A.

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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?

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

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Electric Circuits
A two port network is defined by the relation The value of Z12 is

 2/31.
 -3.
 3/41.
 3.

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MORE MCQ ON Electric Circuits

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