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Electric Circuits

Electric Circuits
In the circuit given, I = 1 A for Is = 0. What is the value of I for Is = 2 A ?

  2 A.
 4 A.
 1 A.
 3 A.

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Electric Circuits
In the given figure, the Thevenins equivalent voltage and impedance as seen from the terminals P - Q is given by

 4 V and 7.5 Ω.
 2 V and 7.5 Ω.
 4 V and 5 Ω.
 2 V and 5 Ω.

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Electric Circuits
What is called the frequency in AC operation?

 No. of (+) ve quadrature made per second.
 No. of wave made per second.
 No. of (-) ve quadrature made per second.
 No. of cycles made per second.

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Electric Circuits
Which of the following substance when added to electrolyte promotes smooth deposition?

 Albumen.
 Any of above.
 Glucose.
 Gelatine.

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Electric Circuits
A 10 μF capacitor and 100 W, 220 V lamp is connected in series across a 220 V alternating supply. In which frequency of the supply the lamp will glow brightest?

 1000 Hz.
 100 Hz.
 1 Hz.
 10 Hz.

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Electric Circuits
A 50 μF capacitor is charged to retain 10 MJ of energy by a constant charging current of 1 A. Determine the voltages across the capacitor?

 50 V.
 20 V.
 60 V.
 30 V.

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