Power in AC Circuit and Wattless Current

A series LCR circuit is made by taking $R=100\mathrm{\Omega },L=\frac{2}{\pi }\mathrm{H},C=\frac{100}{\pi }\mathrm{\mu F}$ . This series combination is connected across an a.c. source of $220 \mathrm{V}, 50 \mathrm{Hz}$. Calculate (i) the impedance of the circuit and
(ii) the peak value of the current flowing in the circuit.
(iii) Calculate the power factor of this circuit.

The true power in an AC circuit should be measured in __________________?

The three types of power in AC circuits are _______________, ______________, and ________________ power

Real or true power do the actual work in the _____?

The true power is measured in watts and signifies the power drawn by the circuits resistance to do useful works.

How do you find the true power in an AC circuit?

The form factor is the ratio of 

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

Form factor of a sawtooth waveform with a period of $3 \sec$ and a peak voltage of $150 \mathrm{V}$ is-

The $\mathrm{rms}$ value of sinusoidally varying current is_____. That of its average value.

The form factor of the sinusoidal waveform is ?

The potential difference $V$and the current $I$ flowing through an A.C circuit is given by $V=5 \cos (\omega t-\frac{\mathrm{\pi }}{6})$ in volt  and $I=10 \sin \left(\omega t\right)$ in ampere. The average power dissipated in the circuit is:

Effective voltage $V_{\mathrm{rms}}$ is related to peak voltage $V_0$ by

In an $\text{AC}$ circuit, the instantaneous e.m.f. and current are given by

$E=100\sin 30t$

$I=20 \sin \left(30t-\frac{\mathrm{\pi }}{4}\right)$

In one cycle of $\text{AC}$, the average power consumed by the circuit and the watt less current are, respectively:

The emf of an AC circuit is given by$e=60 \sin (53.141t)$ and the current by $i=\frac{\left(60\right)}{10.628} \sin (53.141t-\frac{\mathrm{\pi }}{2}).$ Then the power consumed by the circuit is _____.

An electric bulb marked as $50\mathrm{W}-200\mathrm{V}$ is connected across a $100V$ supply. The present power of the bulb is

In a series LR circuit, power of $400 \mathrm{W}$ is dissipated from a source of $250 \mathrm{V}, 50 \mathrm{Hz}.$ The power factor of the circuit is $0.8.$ In order to bring the power factor to unity, a capacitor of value $C$ is added in series to the $L$ and $R.$ Taking the value of $\mathrm{C}$ as $\left(\frac{\mathrm{n}}{3\mathrm{\pi }}\right)\mathrm{\mu F},$ then value of $n$ is ________.

A direct current of $2 A$ and an alternating current having a maximum value of $2 A$ flow through two identical resistance. The ratio of heat produced in the two resistances will be :-

In an alternating current circuit, Some elements are connected in series, out of them, a bulb is used as the resistor. If we increase the frequency of alternating source, the brightness of the bulb also changes, which is given in List-I. According to change in the brightness, select the correct elements given in List-II.