1
JEE Main 2023 (Online) 12th April Morning Shift
+4
-1

Given below are two statements:

Statement I : When the frequency of an a.c source in a series LCR circuit increases, the current in the circuit first increases, attains a maximum value and then decreases.

Statement II : In a series LCR circuit, the value of power factor at resonance is one.

In the light of given statements, choose the most appropriate answer from the options given below.

A
Both Statement I and Statement II are False.
B
Statement I is incorrect but Statement II is true.
C
Both Statement I and Statement II are true.
D
Statement I is correct but Statement II is false.
2
JEE Main 2023 (Online) 11th April Morning Shift
+4
-1

As per the given graph, choose the correct representation for curve $$\mathrm{A}$$ and curve B.

Where $$\mathrm{X}_{\mathrm{C}}=$$ reactance of pure capacitive circuit connected with A.C. source

$$\mathrm{X}_{\mathrm{L}}=$$ reactance of pure inductive circuit connected with $$\mathrm{A} . \mathrm{C}$$. source

R = impedance of pure resistive circuit connected with A.C. source.

$$\mathrm{Z}=$$ Impedance of the LCR series circuit $$\}$$

A
$$\mathrm{A}=\mathrm{X}_{\mathrm{L}}, \mathrm{B}=\mathrm{R}$$
B
$$\mathrm{A}=\mathrm{X}_{L}, \mathrm{~B}=Z$$
C
$$\mathrm{A}=\mathrm{X}_{\mathrm{C}}, \mathrm{B}=\mathrm{X}_{\mathrm{L}}$$
D
$$\mathrm{A}=\mathrm{X}_{\mathrm{C}}, \mathrm{B}=\mathrm{R}$$
3
JEE Main 2023 (Online) 10th April Morning Shift
+4
-1

Given below are two statements:

Statement I : Maximum power is dissipated in a circuit containing an inductor, a capacitor and a resistor connected in series with an AC source, when resonance occurs

Statement II : Maximum power is dissipated in a circuit containing pure resistor due to zero phase difference between current and voltage.

In the light of the above statements, choose the correct answer from the options given below:

A
Statement I is false but Statement II is true
B
Both Statement I and Statement II are false
C
Statement I is true but Statement II is false
D
Both Statement I and Statement II are true
4
JEE Main 2023 (Online) 6th April Evening Shift
+4
-1

A capacitor of capacitance $$150.0 ~\mu \mathrm{F}$$ is connected to an alternating source of emf given by $$\mathrm{E}=36 \sin (120 \pi \mathrm{t}) \mathrm{V}$$. The maximum value of current in the circuit is approximately equal to :

A
$$\frac{1}{\sqrt{2}} A$$
B
$$2 \sqrt{2} A$$
C
$$\sqrt{2} A$$
D
$$2 A$$
EXAM MAP
Medical
NEET
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12