Embibe Experts Solutions for Exercise 3: Assignment Set-2

In an $AC$ circuit as shown in the figure, the source is of $rms$ voltage $200 \mathrm{V}$ and variable frequency. At resonance, the circuit

A current of $2 \mathrm{A}$ is flowing at $220 \mathrm{V}$ in the primary coil of a transformer. If current in the secondary coil is $1 \mathrm{A}$ and efficiency of the transformer is $80\%$ then the voltage produced in the secondary coil will be

In an $L-C$ oscillation maximum charge on capacitor can be $Q_0.$ If at any instant electrical energy is ${\left(\frac{3}{4}\right)}^{th}$ of the magnetic energy then the charge on capacitor at that instant is

Choose the correct statement about the choke coil.

The reading of the A.C. voltmeter in the network shown in figure is (where $V$ is in volt)

An electric bulb rated $100 \mathrm{W}, 100 \mathrm{V}$ has to be operated across $141.4 \mathrm{V}, 50 \mathrm{Hz}$ $AC$ supply. The capacitance of the capacitor which has to be connected in series with bulb so that bulb will glow with full intensity is

An inductor and a resistor are connected in series across A.C. supply. Which of the following phasor diagram may be correct?

Which of the following statement is incorrect about AC circuit?