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Electric Circuits

Electric Circuits
In parallel RLC circuit under resonance condition the value of current is

None of these
 Zero
 Minimum
 Maximum

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Electric Circuits
The efficiency in case of maximum power transfer theorem is

 100 %.
 50 %.
 less than 50 %.
 50 % - 100 %.

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Electric Circuits
A series RLC circuit is connected across a 240V, 50 Hz supply. When the voltage across capacitor is 250V, a maximum current of 0.5A flows in the circuit. Find the resistance.

 480 Ohms.
 1000 Ohms.
 500 Ohms.
 100 Ohms.

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Electric Circuits
A 20 μF capacitor and 200 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow dimmest?

 1000 Hz.
 10 Hz.
 100 Hz.
 1 Hz.

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Electric Circuits
Reciprocity condition for h parameters is

 h11h22 - h21h12 = 0.
 h12 = h21.
 h12 = h21.
 h12 = - h21.

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Electric Circuits
Current efficiency in electroplating is usually

  70 to 80 %.
  99 %.
  50 to 60 %.
  90 to 98 %.

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MORE MCQ ON Electric Circuits

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