1
MHT CET 2023 9th May Evening Shift
+1
-0

An alternating voltage of frequency '$$\omega$$' is induced in electric circuit consisting of an inductance '$$L$$' and capacitance '$$C$$', connected in parallel. Then across the inductance coil

A
current is maximum when $$\omega^2=\frac{1}{\mathrm{LC}}$$
B
current is zero
C
voltage is minimum when $$\omega^2=\frac{1}{\text { LC }}$$
D
voltage is maximum when $$\omega^2=\frac{1}{\mathrm{LC}}$$
2
MHT CET 2023 9th May Evening Shift
+1
-0

The reactance of capacitor at $$50 \mathrm{~Hz}$$ is $$5 \Omega$$. If the frequency is increased to $$100 \mathrm{~Hz}$$, the new reactance is

A
$$5 \Omega$$
B
$$10 \Omega$$
C
$$2.5 \Omega$$
D
$$125 \Omega$$
3
MHT CET 2023 9th May Morning Shift
+1
-0

The coil of an a.c. generator has 100 turns, each of cross-sectional area $$2 \mathrm{~m}^2$$. It is rotating at constant angular speed $$30 ~\mathrm{rad} / \mathrm{s}$$, in a uniform magnetic field of $$2 \times 10^{-2} \mathrm{~T}$$. If the total resistance of the circuit is $$600 ~\Omega$$ then maximum power dissipated in the circuit is

A
$$6 \mathrm{~W}$$
B
$$9 \mathrm{~W}$$
C
$$12 \mathrm{~W}$$
D
$$24 \mathrm{~W}$$
4
MHT CET 2023 9th May Morning Shift
+1
-0

A capacitor, an inductor and an electric bulb are connected in series to an a.c. supply of variable frequency. As the frequency of the supply is increased gradually, then the electric bulb is found to

A
increase in brightness.
B
decrease in brightness.
C
increase, reach a maximum and then decrease in brightness.
D
show no change in brightness.
EXAM MAP
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