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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Q. In a parallel resonant circuit, the circuit current at resonance is maximum.

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Q. An RLC series circuit is underdamped. To make it overdamped, the value of R

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Q. Henry is equivalent to

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Q. In a minimum function

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Q. The drift velocity of electrons is

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Q. Wave A = 100 sin ωt and wave B = 100 cos ωt. Then

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Q. In an R-C series circuit excited by a voltage E, the charge across capacitor at t = 0⁺ is

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Q. A two branch parallel circuit has a 20 Ω resistance and 1 H inductance in one branch and a 100 μF capacitor in the second branch. It is fed from 100 V ac supply, at resonance, the input impedance of the circuit is

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Q. As compared to the number of network elements in Brune synthesis, the number of network elements Bott-and Duffin in realization is

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Q. A series RC circuit has R = 5 Ω and C = 10 μF. The current in the circuit is 5 sin 20000t. The applied voltage is

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Q. A capacitor stores 0.15C at 5 V. Its capacitance is

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Q. A 0.5 μF capacitor is connected across a 10 V battery. After a long time, the circuit current and voltage across capacitor will be

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Q. An RLC series circuit has Q = 100 and ω₀ = 20 rad/sec. The bandwidth is

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Q. For making a capacitor, the dielectric should have

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Q. In an unloaded transformer, the fluxes limiting the primary and secondary are 30 mWb and 20 mWb. The coefficient of coupling is

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