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Electric Circuits

Electric Circuits
In active filter which element is absent?

 Resistor.
 Capacitor.
 Both of above.
 Inductor.

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Electric Circuits
Find the current through 5 Ohm resistor from A to B.

 -1A.
 2A.
 -2A.
 1A.

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Electric Circuits
Capacitors for P.f correction are rated in

 KV.
 KW.
 KVA.
 KVAR.

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Electric Circuits
When the battery is being charged, the terminal voltage decreases with

 increasing state of charge.
 increasing charging rate.
 none of these.
 increasing temperature.

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Electric Circuits
When AC flows through a pure capacitance then the current

 is in phase with emf.
 leads the emf by - 90o.
 lags the emf by 90o.
 leads the emf by 90o.

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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.
  σ/ω ε.
 ω σ/ε.

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MORE MCQ ON Electric Circuits

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