COMEDK 2023 Evening Shift | Alternating Current Question 12 | Physics

What should be the inductance of an inductor connected to $$200 \mathrm{~V}, 50 \mathrm{~Hz}$$ source so that the maximum current of $$\sqrt{2}$$ A flows through it?

$$\frac{\sqrt{2}}{\pi} H$$

$$2 \pi H$$

$$\frac{2}{\pi} \mathrm{H}$$

$$\frac{\pi}{2} H$$

COMEDK 2022

MCQ (Single Correct Answer)

-0

During the phenomenon of resonance

the amplitude of oscillation becomes large

the frequency of oscillation becomes large

the time period of oscillation becomes large

All of the above

COMEDK 2022

MCQ (Single Correct Answer)

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A DC ammeter and a hot wire ammeter are connected to a circuit in series. When a direct current is passed through circuit, the DC ammeter shows 6 A. When AC current flows through circuit, what is the average readings in DC ammeter and the AC ammeter, if DC and AC currents flows simultaneously through the circuit?

DC = 6 A, AC = 10 A

DC = 3 A, AC = 5 A

DC = 5 A, AC = 8 A

DC = 2 A, AC = 3 A

COMEDK 2022

MCQ (Single Correct Answer)

-0

A series L-C-R circuit is connected to an AC source of 220 V and 50 Hz shown in figure. If the readings of the three voltmeters $$V_1,V_2$$ and $$V_3$$ are 65 V, 415 V and 204 V respectively, the value of inductance and capacitance will be

COMEDK 2022 Physics - Alternating Current Question 13 English

2.0 H, 5 $$\mu$$F

1.0 H, 5 $$\mu$$F

4.0 H, 6 $$\mu$$F

1.0 H, 2 $$\mu$$F

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