Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 33

EASY

JEE Main/Advance

IMPORTANT

Earn 100

In a series $L C R$ circuit $V_{L} = 3 V_{R}$ and $V_{C} = 2 V_{R}$ Voltage across capacitance

50% studentsanswered this correctly

Important Questions on Alternating Current

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 34

The primary coil of an ideal transformer has

100

turns and the secondary coil has

600

turns. Then

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 35

The

p . d .

across an instrument in an

AC

circuit of frequency

f

is

V

and the current flowing through it is

I

such that

V = 5 \cos (2 π f t) volt

and

I = 2 \sin (2 π f t) amp

. The power dissipated in the instrument is:

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 37

An

RLC

series circuit is driven by a sinusoidal emf with angular frequency

ω .

If

ω

is increased without changing the amplitude of the emf the current amplitude increases. It means

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 39

A sinusoidal AC voltage

V = 10 \sin (100 π t)

is rectified by a full wave rectifier. The frequency (in

Hz

) of rectified voltage is_____

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 42

For the circuit shown below, the current through the inductor is $0.6 A$ , while current through the capacitor is $0.4$ $A .$ The current $(in A)$ drawn from the source is _____

Question Image

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 43

The instantaneous value of current at a given instant is $1 A$ and peak value of current, is $\frac{5}{3} A .$ The potential difference between $P$ and $Q$ at the same instant comes out $\frac{N}{3}$ volt, value of $N$ is___________

Question Image

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment Set-2>Q 45

An alternating voltage,

V = 200 \sqrt{2} \sin (100 t + \frac{π}{3})

is applied across an inductor of inductance

50 mH

.

The

r . m . s .

value of current

(in A)

in the circuit is _____

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>Assignment>Q 1

The resonance frequency of a certain

R L C

series circuit is

ω_{0}

. A source of angular frequency

2 ω_{0}

is inserted into the circuit. After transients die out, the angular frequency of current oscillation is