1
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An inductance of 2 mH , a condenser of $20 \mu \mathrm{~F}$ and a resistance of $50 \Omega$ are connected in series to an a.c. source. The reactance of inductor and condenser are same. The reactance of either of them will be

A
$100 \Omega$
B
$50 \Omega$
C
$40 \Omega$
D
$10 \Omega$
2
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In an $L C R$ circuit, if ' $V$ ' is the effective value of the applied voltage, $V_R$ is the voltage across ' $R$ ', ' $\mathrm{V}_{\mathrm{L}}$ ' and ' $\mathrm{V}_{\mathrm{C}}$ ' is the effective voltage across ' L ' and ' $C$ ' respectively then

A
$\mathrm{V}=\mathrm{V}_{\mathrm{R}}+\mathrm{V}_{\mathrm{L}}+\mathrm{V}_{\mathrm{C}}$
B
$\mathrm{V}^2=\mathrm{V}_{\mathrm{R}}^2+\mathrm{V}_{\mathrm{L}}^2+\mathrm{V}_{\mathrm{C}}^2$
C
$\mathrm{V}^2=\mathrm{V}_{\mathrm{R}}^2+\left(\mathrm{V}_{\mathrm{L}}-\mathrm{V}_{\mathrm{c}}\right)^2$
D
$\mathrm{V}^2=\mathrm{V}_{\mathrm{L}}^2+\left(\mathrm{V}_{\mathrm{R}}-\mathrm{V}_{\mathrm{C}}\right)^2$
3
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A light bulb connected in series with a capacitor and an a.c. source is glowing with a certain brightness. On reducing the capacity of capacitance and frequency of source, the brightness of the lamp (respectively)

A
is reduced, is increased
B
is reduced, is reduced
C
is increased, is reduced
D
is increased, is increased
4
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If a transformer of an audio amplifier has output impedance $8000 \Omega$ and the speaker has input impedance $8 \Omega$, the primary and secondary turns of this transformer connected between the output of amplifier and to loudspeaker should have the ratio

A
$1000: 1$
B
$100: 1$
C
$1: 32$
D
$32: 1$
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