What is wattless current ?...

What is wattless current ?

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What is meant by wattles current ?

Assertion : In a purely inductive or capacitive circuit, the current is referred to as wattless currents. Reason : No power is dissipated in a purely inductive or capacitive circuit even though a current is flowing in the circuit.

In the series LCR circuit as shown in figure, the heat developed in 80 seconds and amplitude of wattless current is :

A circuit consisting of an inductance and a resistance joined to a 200 volt supply ( A.C.) It draws a current of 10 ampere. If the power used in the circuit is 1500 watt, then the wattless current component is

The series combination of resistance R and inductance L is connected to an alternating source of e.m.f. e = 311 sin (100 pit) . If the value of wattless current is 0.5A and the impedance of the circuit is 311Omega , the power factor will be –

In an AC circuit,the instantaneous e.m.f.,and current are given by E=100sin30tI=20sin(30t-(pi)/(4)) In one cycle of AC,the average power consumed by the circuit and the wattless current are respectively

In an a.c. circuit, the instantaneous e.m.f. and current are given by e = 100 sin 30 t i = 20 sin( 30t-(pi)/(4)) In one cycle of a.c., the average power consumed by the circuit and the wattless current are, respectively :

In an a.c. circuit, the instantaneous e.m.f. and current are given by e=100sin30t I=20sin(30t-(pi)/(4)) In one cycle of a.c., the average power consumed by the circuit and the wattless current are, respectively.

The r.m.s current in an AC circuit is 2A . If the wattless current be sqrt(3)A , what is the power factor?

MODERN PUBLICATION-ALTERNATING CURRENT -Revision Exercises Short Answer Questions

(a) For a given a.c., i = i(m) sin wt, show that the average power dis...
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(a) In a series LCR circuit connected across an AC source of varible f...
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What is electric resonance ?
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Write down the condition of resonance in series L-C-R circuit and henc...
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An inductor L of inductance X(L) is connected in series with a bulb B ...
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Answer the following questions : (a) In any a.c. circuit, is the app...
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What is the power dissipation in an AC circuit in which voltage and cu...
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Obtain anexpression for the average power of an a.c circuit .
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What is wattless current ?
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What is power factor of an LCR circuit ? Explain on the basis of power...
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Given below are two electric circuits A and B. Calculate the rat...
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Describe the principle and theory of a transformer . Why the efficienc...
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With the help of a labelled diagram explain the working of a transform...
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Electrical energy is transmitted over large distances at high alternat...
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Why cannot a transformer be used to step up d.c. voltage ?
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The core of a transformer is made of magnetic material of high permean...
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State the principle of an ac generator.
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An a.c. generator having a constant magnetic field is conneted to a re...
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Can a.c. source be connected to a circuit and yet deliver no power to ...
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At resonance in an LCR circuit the emf and current are (i) in phase ...
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