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Electric Circuits

Electric Circuits
Which of the following is the correct relation?

 AD-BC = 1.
 AB-CD = 1 .
 all of these.
 AC-BD = 1.

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Electric Circuits
A periodic voltage having the Fourier series V(t)= {1 + 4sinω0t}

 21 W.
 24.5 W.
 1 W.
 11 W.

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Electric Circuits
Poorest conductor of electricity is

  Aluminium.
  Steel.
  Silver.
  Carbon.

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Electric Circuits
A 3 wire, 3 - φ supply feeds a load consisting of three equal resistors. By how much is the load reduced if one of the resistors be removed when the load is in star?

 66.66 % of the original load.
 25 % of the original load.
 33.33 % of the original load.
 50 % of the original load.

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Electric Circuits
Electrolyte for silver plating is

  potassium nitrate solution.
  any of above.
  dilute sulphuric acid.
  double cyanide of silver and potassium solution.

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Electric Circuits
In steady state condition capacitor acts as a

 open circuit
 current source
 voltage source
 short circuit

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