COMEDK 2023 Evening Shift | Alternating Current Question 31 | 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)

-0

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

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