Average and RMS Value of Alternating Current and Voltage

IMPORTANT

Average and RMS Value of Alternating Current and Voltage: Overview

This topic covers concepts, such as, Average Value of a Function, Average Value of Time Dependent Function, Form Factor & Peak Factor etc.

Important Questions on Average and RMS Value of Alternating Current and Voltage

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The instantaneous current and voltage of an AC circuit are given by i=10sin314t A and V=100sin314t V. The power dissipation in the circuit is

HARD
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The RMS value of voltage of the waveform shown below is, vrms=k3 V, find the value of k.
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An alternating voltage E=2002sin100t is connected to a 1 micro farad capacitor through an AC ammeter. The reading of the ammeter shall be:

MEDIUM
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If a capacitor of 8 μF is connected to a 220 V, 100 Hz, AC source and the current passing through it is 65 mA then the rms voltage across it is

EASY
IMPORTANT

Find the form factor of the wave form given in figure-

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Form factor of a sawtooth waveform with a period of 3 sec and a peak voltage of 150 V is-

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The rms value of sinusoidally varying current is_____. That of its average value.

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The form factor of the sinusoidal waveform is ?

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A wire is carrying a direct current of 20A and a sinusoidal alternating current of peak value 20A. Find the rms value of the resulting current

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An AC voltage (in Volt) varies with time t (in seconds) as V=100 sin50πt.

The peak value of voltage, the rms value of the voltage and the frequency respectively are

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In an ac generator, the no. of turns in the coil is 2000 and the area of the coil is 0.1 m2. The coil is rotating at an angular frequency of 200 radsec in a magnetic field of 0.2 T, what is the peak value of the induced emf?

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The peak factor of the sinusoidal wave form is?

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The value from positive to negative peak of the sine wave si called?

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The r-m-s value of AC voltageV in terms of sin x and cos x is always same for a complete cycle.

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The r-m-s value of V1=Vp sin ω t and V2=Vp cos ω t is _____ times Vp for a complete cycle. Here, Vp is peak voltage.

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Compare the r-m-s value of V1=Vp sin ω t and V2=Vp cos ω t for a complete cycle. Here, Vp is peak voltage.

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The voltage supplied to a circuit is given by V=V2t32 where t is in sec. The rms value of voltage for period t=0 to t=1 sec is 

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AC voltage supplied to resistor of resistance 10Ω is E=20 sin300t-π4. The rms value of current is 

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If the peak value of current in 50 Hz a.c. supply is 10A then the average value of alternating current for time-interval 0 to T2 is _____?