Q. For the circuit of figure, the time constant is

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Q. A pole zero plot of a filter is shown in figure. It is

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Q. In an idealized half wave rectified system the average and r.m.s. values of voltage are __________ respectively.

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Q. Which of the following is correct? The circuit shown in the figure.

1. is reciprocal but not symmetrical
2. is not reciprocal but symmetrical
3. both reciprocal and symmetrical
4. neither reciprocal nor symmetrical

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Q. For an m-derived high pass filter

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Q. In figure, the switch has been in closed position for a long time. At t = 0, the switch is opened. At t = 0+, the current R1 is

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Q. The expression for the resonant frequency ω0 in the circuit shown

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Q. For a superconductor, magnetisation M in a field H is

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Q. A sinusoidal voltage has peak to peak value of 100 V. The rms value is

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Q. A capacitor is needed for an ac circuit of 230 V, 50 Hz the peak voltage rating of the capacitor should be

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Q. RMS value of i(t) = 10[1 + sin (- t)] is

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Q. The electrical energy required to heat a bucket of water to a certain temperature is 2 kWh. If heat losses, are 25%, the energy input is

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Q. The current rating of a cable depends on

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Q. In an ac circuit, the maximum and minimum values of power factor can be

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Q. A cable has an insulation resistance of 10¹ᴼ ohms. If the length is doubled, the insulation resistance will be

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Q. Which of the following pairs are correctly matched?

1. Brune's realisation : realisation with ideal transformer.
2. Cauer realisation : ladder realisation.
3. Bott Duffin realisation : with non ideal transformer.

Select the answer using the following codes:

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Q. The synthesis of minimum function was suggested by

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Q. For a transmission line open circuit and short circuit impedances are 20 Ω and 5 Ω. Then characteristic impedance is

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Q. The terms RMS and average values apply only to sine waves.

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Q. C = (2) (energy)/V²

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