Q. The current through a 1 mH inductance is i(t) = 2.56 x 10¯² - 4 x 10³ t for 2 ≤ t ≤ 20 μ sec. The voltage across the inductor is

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Q. A capacitor whose capacitance Ct = C₀ (1- cos ωt) is fed by a sinusoidal voltage v = V₀ sin ωt. The equation for current i is

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Q. Assertion (A): In a circuit having high inductance, reactive power may be more than apparent power.

Reason (R): Reactive power = VI sin θ.

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Q. A two branch parallel circuit has a 10 Ω resistance and 0.5 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 source current is

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Q. Insulation resistance of a cable is directly proportional to its length.

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Q. For a series RLC circuit bandwidth is ω2 - ω₁ = R/2L.

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Q. If Z(s) = (s² + 1)/s , the network has

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Q. Maximum power transfer theorem finds application in

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Q. In a series L-C circuit fed by ac voltage, voltage drops across L and C are 40 V and 30 V respectively. The supply voltage is

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Q. In a reactance function

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Q. A series resonant circuit has R = 2 Ω, L = 0.1 H and C =10 μF. At resonance applied voltage = 10 ∠0 V. Voltage across inductance is likely to be

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Q. If A = 3 + j1 and B = 4 + j3, A - B =

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Q. Two impedances 10 - j 10 and 10 + j 10 are connected in parallel. Their combined impedance is

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Q. Resistivity of semiconductors is around 100 Ω-m.

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Q. Two capacitors of 20 μF each are in series. The total capacitance is

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Q. Thevenin's theorem is used to find current in a branch of a network. It is now desired to find current in another branch of the network

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Q. A two branch parallel tuned circuits has a coil of resistance R and inductance L in one branch and capacitance C in the second branch. The bandwidth is 200 radians/sec. A load of resistance RL is connected in parallel. The new bandwidth will be

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Q. The correct relation between joules and calories is

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Q. A voltage v = 100 sin (100 pt + 45°) V is applied to an impedance 10 + j10 ohm. The current is

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Q. A 20 Ω resistor, a 1H inductor and 1μF capacitor are connected in parallel the combination is driven by a unit step current. Under the steady state, source current flows through

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