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Electric Circuits

Electric Circuits
Capacitors for P.f correction are rated in

 KVA.
 KV.
 KW.
 KVAR.

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Electric Circuits
The resistivity of semi-conductors at room temperatures is

 1000 to 1500 ohm - cm.
 1.6 × 106 to 100 × 106 ohm - cm.
 0.01 to 50 ohm - cm.
 109 to 1012 ohm - cm.

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Electric Circuits
In active filter which element is absent?

 Capacitor.
 Resistor.
 Both of above.
 Inductor.

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Electric Circuits
Which of the followings is/are active element?

 None of these.
 Both
 Voltage source
 Current source

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Electric Circuits
For ideal tank circuit, what is the value of dynamic admittance?

 Both
 0
None of these
 ∞

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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?

 1 Hz.
 10 Hz.
 100 Hz.
 1000 Hz.

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MORE MCQ ON Electric Circuits

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