1
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
$$24 \mathrm{~W}$$
2
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.
3
MHT CET 2023 9th May Morning Shift
+1
-0

In an $$\mathrm{AC}$$ circuit, the current is $$\mathrm{i}=5 \sin \left(100 \mathrm{t}-\frac{\pi}{2}\right) \mathrm{A}$$ and voltage is $$\mathrm{e}=200 \sin (100 \mathrm{t})$$ volt. Power consumption in the circuit is $$\left(\cos 90^{\circ}=0\right)$$

A
$$200 \mathrm{~W}$$
B
$$0 \mathrm{~W}$$
C
$$40 \mathrm{~W}$$
D
$$1000 \mathrm{~W}$$
4
MHT CET 2022 11th August Evening Shift
+1
-0

A capacitor of capacitance $$50 \mu \mathrm{F}$$ is connected to a.c. source $$\mathrm{e}=220 \sin 50 \mathrm{t}$$ ($$\mathrm{e}$$ in volt, $$\mathrm{t}$$ in second). The value of peak current is

A
$$\frac{0.55}{\sqrt{2}} \mathrm{~A}$$
B
$$\frac{\sqrt{2}}{0.55} \mathrm{~A}$$
C
$$0.55 \mathrm{~A}$$
D
$$\sqrt{2} \mathrm{~A}$$
EXAM MAP
Medical
NEET