1
MHT CET 2023 11th May Evening Shift
+1
-0

The a.c. source is connected to series LCR circuit. If voltage across $$R$$ is $$40 \mathrm{~V}$$, that across $$\mathrm{L}$$ is $$80 \mathrm{~V}$$ and that across $$\mathrm{C}$$ is $$40 \mathrm{~V}$$, then the e.m.f. '$$e$$' of a.c. source is

A
40 V
B
40$$\sqrt2$$ V
C
80 V
D
160 V
2
MHT CET 2023 11th May Evening Shift
+1
-0

In a series LCR circuit, $$\mathrm{C}=2 \mu \mathrm{F}, \mathrm{L}=1 \mathrm{mH}$$ and $$\mathrm{R}=10 \Omega$$. The ratio of the energies stored in the inductor and the capacitor, when the maximum current flows in the circuit, is

A
$$5: 1$$
B
$$3: 2$$
C
$$1: 2$$
D
$$1: 5$$
3
MHT CET 2023 11th May Evening Shift
+1
-0

The a.c. source of e.m.f. with instantaneous value '$$e$$' is given by $$e=200 \sin (50 t)$$ volt. The r.m.s. value of current in a circuit of resistance $$50 \Omega$$ is

A
0.2828 A
B
2.828 A
C
28.28 A
D
282.8 A
4
MHT CET 2023 11th May Morning Shift
+1
-0

With the gradual increase in frequency of an a. c. source, the impedance of an LCR series circuit

A
first decreases, becomes minimum and then increases.
B
increases.
C
decreases.
D
remains constant.
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