1
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A coil has inductance H . The ratio of its reactance when it is connected first to an a.c. source and then to d.c. source is

A
$\infty$
B
zero
C
one
D
two
2
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A resistor of $50 \Omega$, inductor of self inductance $\left(\frac{3}{\pi^2}\right) \mathrm{H}$ and a capacitor of unknown capacity are connected in series to an a.c. source of 100 V and 50 Hz . When the voltage and current are in phase, the value of capacitance is (nearly)

A
$0.66 \times 10^{-4} \mathrm{~F}$
B
$0.33 \times 10^{-4} \mathrm{~F}$
C
$0.66 \times 10^{-2} \mathrm{~F}$
D
$0.33 \times 10^{-2} \mathrm{~F}$
3
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following graph represent correctly the variation of impedance $(\mathrm{Z})$ of a series LCR circuit with the frequency $(v)$ of applied a.c.?

MHT CET 2024 15th May Evening Shift Physics - Alternating Current Question 8 English

A
A
B
B
C
C
D
D
4
MHT CET 2024 15th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

When a coil is connected to a d.c. source of e.m.f. 12 volt; then the current of 4 A flows in it . If the same coil is connected to a 12 volt, 50 Hz a.c. source, then the current flowing in it is 2.4 A . Then self-inductance of the coil will be

A
48 H
B
12 H
C
$\frac{4}{\pi} \times 10^{-2} \mathrm{H}$
D
$\frac{8}{\pi} \times 10^{-2} \mathrm{H}$
MHT CET Subjects
EXAM MAP