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Electric Circuits

Electric Circuits
The ratio of the resistance of a 200 W, 230 V lamp to that of a 100 W, 115 V lamp will be

  0.5.
  2.
 4.
 0.25.

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Electric Circuits
In the above question find the angle between voltage and current?

 60.
 30.
 54.74.
 90.

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Electric Circuits
Instantaneous power in inductor is proportional to the

 temperature of the inductor.
 square of instantaneous current.
 square of the rate of change of current.
 product of the instantaneous current and rate of change of current.

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Electric Circuits
If a resistor and an inductor are connected in series across a voltage source. Which two parameters in that circuit increase if frequency of voltage source increases?

 VL and I.
 Z and I.
 VL and VR.
 VL and Z.

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Electric Circuits
Active filter consists of

 inductor.
 op-amp.
 op-amp and capacitor.
 capacitor.

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Electric Circuits
Four capacitors each of 40 µF are connected in parallel, the equivalent capacitance of the system will be

 10 µF
 160 µF
 5 µF
 40 µF

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MORE MCQ ON Electric Circuits

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