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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Q. A 3 phase balanced supply feeds 3 phase unbalanced load. Power supplied to the load can be measured by using

1. 2 wattmeter
2. one wattmeter
3. 3 wattmeter

Which of the above statements is correct?

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Q. Which of the following is correct for a driving point functions?

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Q. In an RC series circuit R = 100 Ω and XC = 10 Ω. In this circuit

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Q. The impedance of an RC series circuit is 12 Ω at f= 50 Hz. At f= 200 Hz, the impedance will be

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Q. A current is flowing through a conductor with non-uniform area of cross-section. Then

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