Alternating Current PYQs - Last 5 Years
KCET / Physics / Electromagnetism / 16 recent questions
PhysicsElectromagnetism2022-2026
Practice 16 KCET Physics questions from Alternating Current. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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2022-2026
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Last 5 Years Alternating Current Questions
Showing 16 of 16 filtered questions.
1Alternating Current
In a circuit containing a pure resistor connected to an AC source,
MCQ+1 / -02026
2Alternating Current
A light bulb rated $100$ W is connected to an AC source of $220$ V, $50$ Hz. The rms current through the bulb is
MCQ+1 / -02026
3Alternating Current
A small town with a demand of $900\text{ kW}$ of electric power at $220\text{ V}$ is situated $20\text{ km}$ away from an electric power generating station. Each wire of the two-wire transmission line has a resistance per unit length of $5 ...
MCQ+1 / -02026
4Alternating Current
A series LCR circuit containing an AC source of 100 V has an inductor and a capacitor of reactances $24 \Omega$ and $16 \Omega$ respectively. If a resistance of $6 \Omega$ is connected in series, then the potential difference across the ser...
MCQ+1 / -02025
5Alternating Current
A sinusoidal voltage produced by an AC generator at any instant t is given by an equation $\mathrm{V}=311 \sin 314$ t. The rms value of voltage and frequency are respectively
MCQ+1 / -02025
6Alternating Current
In domestic electric mains supply, the voltage and the current are
MCQ+1 / -02025
7Alternating Current
In an $L-C-R$ series circuit, the value of only capacitance $C$ is varied. The resulting variation of resonance frequency $f_0$ as a function of $C$ can be represented as
MCQ+1 / -02024
8Alternating Current
The figure shows variation of $R, X_L$ and $X_C$ with frequency $f$ in a series $L-C-R$ circuit. Then, for what frequency point is the circuit capacitive?
MCQ+1 / -02024
9Alternating Current
Which of the following combinations should be selected for better tuning of an $L-C-R$ circuit used for communication?
MCQ+1 / -02024
10Alternating Current
An ideal transformer has a turns ratio of 10. When the primary is connected to \(220 \mathrm{~V}, 50 \mathrm{~Hz}\) as source, the power output is
MCQ+1 / -02023
11Alternating Current
In series \(L C R\) circuit at resonance, the phase difference between voltage and current is
MCQ+1 / -02023
12Alternating Current
Total impedance of a series \(L\)-\(C\)-\(R\) circuit varies with angular frequency of the \(\mathrm{AC}\) source connected to it as shown in the graph. The quality factor \(Q\) of the series \(L\)-\(C\)-\(R\) circuit is
MCQ+1 / -02023
13Alternating Current
An alternating current is given by \(i=i_1 \sin \omega t+i_2 \cos \omega t\). The rms current is given by
MCQ+1 / -02022
14Alternating Current
A fully charged capacitor \(C\) with initial charge \(q_0\) is connected to a coil of self inductance \(L\) at \(t=0\). The time at which the energy is stored equally between the electric and the magnetic field is
MCQ+1 / -02022
15Alternating Current
A series resonant \(\mathrm{AC}\) circuit contains a capacitance \(10^{-6} \mathrm{~F}\) and an inductor of \(10^{-4} \mathrm{H}\). The frequency of electrical oscillations will be
MCQ+1 / -02022
16Alternating Current
In a series \(L C R\) circuit, \(R=300 \Omega, L=0.9 \mathrm{H}, C=2.0 \mu \mathrm{F}\) and \(\omega=1000 \mathrm{~rad} / \mathrm{s}\), then impedance of the circuit is
MCQ+1 / -02022