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Recent questions tagged ch7alternating-current

Resonance frequency of a circuit is f. If capacitance is made 4 time the initial value, the resonance frequency will be

asked Mar 27, 2014 by meena.p

1 answer

The $220\;v$ input is supplied to a transformer . The output circuit draws current of $2.0\;A$ at $440\;V$ If efficiency of transforms is $80\%$ te current drawn by primary circuit is

asked Mar 26, 2014 by meena.p

1 answer

The Voltage time (V-t) graph of triangular wave having peak value $V_0$ is shown. The rms value of V in interval $t=0$ to $t=\large\frac{\pi}{4}$ is

asked Mar 26, 2014 by meena.p

1 answer

An AC Source gives a voltage of $V= 20\; \cos \;(2000 \;t)$. It is connected in a circuit as shown. The voltmeter reading is

asked Mar 25, 2014 by meena.p

1 answer

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