Set 1

Mashaal Masha

Oct 16, 2022

Choose the correct options for the following questions.

Alternating current can be transmitted:

Difficulty: Easy

To long distance

At very high cost

At very low cost

Both a and c

Alternating current is produced by a voltage source which polarity:

Difficulty: Easy

Remains the same

Reverse after every time interval T/2

Keeps on reversing with time

Both b and c

Nowadays, most of the electrical energy is produced by A.C generators using:

Difficulty: Easy

Hydal water

Geothermal energy

Solar energy

Biomass

The time interval during which the voltage source changes its polarity once is known as:

Difficulty: Easy

Time period

Half the time period

Quarter the time period

Two third of the time period

The most common source of alternating voltage is:

Difficulty: Easy

Motor

Transformer

AC generator

Both a and c

The output V of an A.C generator at any instant is given by:

Difficulty: Easy

$V=V_{o} sin \omega t$

$V=V_{o} sin \frac{2\pi}{t} T$

$V=V_{o} sin \frac{2\pi}{t} t$

Both a and c

Using $\theta=\omega t$ and $\omega=\frac{2\pi}{T}$, the angle through which the coil of A.C generator rotates, when t=T/2 is:

Difficulty: Easy

$\frac{\pi}{2}$

$\pi$

$\frac{3\pi}{2}$

Using $V=V_{o} \sin \omega t$ and $\omega=\frac{2\pi}{T}$, the value of alternating voltage V when t=3T/4 is:

Difficulty: Easy

$V_{o}$

$-V_{o}$

V=0

Both a and b

The wave form of alternating voltage is the graph between:

Difficulty: Easy

Voltage along x-axis and time along y-axis

Current and time

Voltage along y-axis and time along x-axis

Voltage and current

The waveform of alternating voltage is a:

Difficulty: Easy

Square

Rectangle

Saw-tooth

Sinusoidal

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Mashaal Masha

Table of Contents

Choose the correct options for the following questions.

Alternating current can be transmitted:

Alternating current is produced by a voltage source which polarity:

Nowadays, most of the electrical energy is produced by A.C generators using:

The time interval during which the voltage source changes its polarity once is known as:

The most common source of alternating voltage is:

The output V of an A.C generator at any instant is given by:

Using $\theta=\omega t$ and $\omega=\frac{2\pi}{T}$, the angle through which the coil of A.C generator rotates, when t=T/2 is:

Using $V=V_{o} \sin \omega t$ and $\omega=\frac{2\pi}{T}$, the value of alternating voltage V when t=3T/4 is:

The wave form of alternating voltage is the graph between:

The waveform of alternating voltage is a:

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Set 1

Mashaal Masha

Table of Contents

Choose the correct options for the following questions.

Alternating current can be transmitted:

Alternating current is produced by a voltage source which polarity:

Nowadays, most of the electrical energy is produced by A.C generators using:

The time interval during which the voltage source changes its polarity once is known as:

The most common source of alternating voltage is:

The output V of an A.C generator at any instant is given by:

Using $\theta=\omega t$ and $\omega=\frac{2\pi}{T}$, the angle through which the coil of A.C generator rotates, when t=T/2 is:

Using $V=V_{o} \sin \omega t$ and $\omega=\frac{2\pi}{T}$, the value of alternating voltage V when t=3T/4 is:

The wave form of alternating voltage is the graph between:

The waveform of alternating voltage is a:

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