1
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A series resonant circuit consists of inductor ' $L$ ' of negligible resistance and a capacitor ' $C$ ' which produces resonant frequency ' $f$ '. If $L$ is changed to 3 L and ' C ' is changed to 6 C , the resonant frequency will become.

A
$\frac{\mathrm{f}}{6}$
B
$\frac{\mathrm{f}}{3}$
C
$\frac{\mathrm{f}}{2 \sqrt{2}}$
D
$\frac{\mathrm{f}}{3 \sqrt{2}}$
2
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The inductive reactance of a coil is ' $R$ ' $\Omega$. If inductance of a coil is tripled and frequency of a.c supply is also tripled, then new inductive reactance will be

A
$\frac{\mathrm{R}}{9}$
B
$\frac{\mathrm{R}}{3}$
C
$\mathrm{3 R}$
D
$\mathrm{9 R}$
3
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An e.m.f. $E=E_0 \cos \omega t$ is applied to circuit containing L and R in series. If $\mathrm{X}_{\mathrm{L}}=2 \mathrm{R}$, then the power dissipated in the circuit is

A
$\frac{\mathrm{E}_0{ }^2}{12 \mathrm{R}}$
B
$\frac{\mathrm{E}_0{ }^2}{10 \mathrm{R}}$
C
$\frac{\mathrm{E}_0{ }^2}{8 \mathrm{R}}$
D
$\frac{\mathrm{E}_0{ }^2}{6 \mathrm{R}}$
4
MHT CET 2024 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When a capacitor is connected in series LR circuit, the alternating current flowing in the circuit

A
is zero.
B
remains constant.
C
increases.
D
decreases.
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