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1
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
For the given circuit, comment on the type of transformer used.

JEE Main 2021 (Online) 16th March Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 117 English
A
Auxiliary transformer
B
Step down transformer
C
Step-up transformer
D
Auto transformer
2
JEE Main 2021 (Online) 16th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
An RC circuit as shown in the figure is driven by a AC source generating a square wave. The output wave pattern monitored by CRO would look close to :

JEE Main 2021 (Online) 16th March Morning Shift Physics - Alternating Current and Electromagnetic Induction Question 119 English
A
JEE Main 2021 (Online) 16th March Morning Shift Physics - Alternating Current and Electromagnetic Induction Question 119 English Option 1
B
JEE Main 2021 (Online) 16th March Morning Shift Physics - Alternating Current and Electromagnetic Induction Question 119 English Option 2
C
JEE Main 2021 (Online) 16th March Morning Shift Physics - Alternating Current and Electromagnetic Induction Question 119 English Option 3
D
JEE Main 2021 (Online) 16th March Morning Shift Physics - Alternating Current and Electromagnetic Induction Question 119 English Option 4
3
JEE Main 2021 (Online) 26th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Find the peak current and resonant frequency of the following circuit (as shown in figure).

JEE Main 2021 (Online) 26th February Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 120 English
A
2 A and 100 Hz
B
2 A and 50 Hz
C
0.2 A and 100 Hz
D
0.2 A and 50 Hz
4
JEE Main 2021 (Online) 26th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
An alternating current is given by the equation i = i1 sin $$\omega$$t + i2 cos $$\omega$$t. The rms current will be :
A
$${1 \over {\sqrt 2 }}{\left( {i_1^2 + i_2^2} \right)^{{1 \over 2}}}$$
B
$${1 \over {\sqrt 2 }}({i_1} + {i_2})$$
C
$${1 \over {\sqrt 2 }}{({i_1} + {i_2})^2}$$
D
$${1 \over 2}{\left( {i_1^2 + i_2^2} \right)^{{1 \over 2}}}$$
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