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Electric Circuits

Electric Circuits
Which of following capacitor will have least value of breakdown voltage?

 Electrolytic.
 Ceramic.
 Paper.
 Mica.

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Electric Circuits
When a lossy capacitor with a dielectric of permittivity ε and conductivity σ operates at a frequency ω the loss tangent for the capacitor is given by

 σ ω ε.
 ω ε/σ.
 ω σ/ε.
  σ/ω ε.

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Electric Circuits
The average value of half wave rectified sinusoidal current waveform, whose maximum value is 1A is

 0.637 A.
 0.318 A.
 1 A.
 0.5 A.

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Electric Circuits
What is the unit of potential difference ?

 Ohm
 Watt
 Ampere
 Volt

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Electric Circuits
When water is added to sulphuric acid

  acid particles get separated.
  colour of acid changes.
  lot of heat is generated.
  water start boiling.

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Electric Circuits
Which of the following lamp has least resistance ?

 100 W, 220 V.
  25 W, 220 V.
  200 W, 220 V.
  60 W, 220 V.

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MORE MCQ ON Electric Circuits

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