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Electric Circuits

Electric Circuits
In RLC parallel network R = 2 Ohm, L = 2mH and C = 1μF. Find the value of time constant?

 2 msec
 4 μsec
 4 msec
 2 μsec

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Electric Circuits
A branch of a network is said to be active when it consists of one

 inductor.
 voltage source.
 resistor.
 capacitor.

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Electric Circuits
A star connected load has three equal impedance each of (40 + j30) Ω If the line current is 5 A then value of line voltage is

 250 √3 V.
 250 V.
 250 / √3 V.
 200 V.

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Electric Circuits
Power dissipation in ideal inductor is

 Minimum
 Zero
 Maximum
 A finite value

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Electric Circuits
2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

 105.
 15.
 60.
 75.

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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.
 0.5 A.
 0.318 A.
 1 A.

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