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Electric Circuits

Electric Circuits
Condition for reciprocity in case of ABCD parameters is

 AD-BC = 1 .
 AB-CD = 1.
 AD-BC = 0.
  AB-CD = 0.

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Electric Circuits
If emf in a given circuit is given by e = 100 sinω0t, then maximum value of voltage and frequency will be

 100√2 V, 100 Hz.
 100 V, 100 Hz.
 50√2 V, 100 Hz.
 100 V, 50 Hz.

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

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

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Electric Circuits
Aluminium is produced from bauxite by

  rotating.
  oxidation.
  electrolytic process.
  froth flotation.

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Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

 4 / 3 Ω.
 3 / 2 Ω.
 6 Ω.
 3 / 4 Ω.

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Electric Circuits
Mica capacitor are characterised by all of following except

 low losses.
 accurate value.
 low leakage reactance.
 stable operation.

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MORE MCQ ON Electric Circuits

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