Find the power of an A.C. circuit....

Find the power of an A.C. circuit.

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MODEL PAPER SET-01
UNITED BOOK HOUSE|Exercise EXERCISE|40 Videos
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In a circuit an e.m.f. E = E_0 sin wt and current I = I_0 sin + (wt+pi/6) Find the power of the circuit, in a fullcycle. Draw a phasor diagram for this voltage and the current. Which two components may be possible in this circuit?

What is the power factor of a circuit having a pure resistance only?

The power factor of an LR circuit carrying an ac of angular frequency omega is

The frequency of applied of ac voltage to an inductive coil is 1000Hz.L=25 mH and the power factor of the circuit is 0.1.Find the resistance of the coil.

An inductor 20mH, a capacitor 50muF and a resistor 40Omega are connected in series across a source of emf V=10sin340t. The power loss in ac circuit is

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The current and voltage in an ac circuit are I=sin(100t+pi/3) A and V=20sin100tV. Calculate the power of the circuit in W.

A circuit draws 280 W from a 110V, 60Hz ac line. The current lags the voltage and the power factor is 0.5. Find the value of a capacitance which can be connected in series to make the power factor of the circuit unity.

Find out the inductance of an inductor which should be connected in series with a capacitor of 5muF ,a resistance of 10Omega and an ac source of 50 Hz so that the power factor of the circuit is 1.

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