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Electric Circuits

Electric Circuits
For the resonance circuit ω0 = 105, Q = 50, R = 400 Ω the value of C is

 125 pF.
 250 pF.
 500 pF.
 1000 pF.

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Electric Circuits
The linear circuit element is

 all of above.
 resistor.
 inductor.
 capacitor.

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Electric Circuits
The maximum value of a current wave is 2A. If the form factor of a current wave is 1.5 and the peak factor is 2.7, find the average value in Amperes.

 1.414 A.
 0.494 A.
 1.57 A.
 0.741 A.

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Electric Circuits
Current magnification will occur in which of the following case?

 Parallel resonance
None of these
 Both
 Series resonance

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Electric Circuits
A balanced 3 - φ star connected load is fed from a 208 V, 3 - φ supply. Each load has resistance of 35 Ω. The total power is

 411.3 W.
 618 W.
 1236 W.
 none of these.

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Electric Circuits
Among the options which metal has the highest electrical conductivity?

 Steel.
 Aluminium.
 Copper.
 Stranded aluminium.

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