MHT CET 2023 9th May Morning Shift | Alternating Current Question 91 | Physics

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 $$\left(\cos 90^{\circ}=0\right)$$

$$200 \mathrm{~W}$$

$$0 \mathrm{~W}$$

$$40 \mathrm{~W}$$

$$1000 \mathrm{~W}$$

MHT CET 2022 11th August Evening Shift

MCQ (Single Correct Answer)

-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

$$\frac{0.55}{\sqrt{2}} \mathrm{~A}$$

$$\frac{\sqrt{2}}{0.55} \mathrm{~A}$$

$$0.55 \mathrm{~A}$$

$$\sqrt{2} \mathrm{~A}$$

MHT CET 2022 11th August Evening Shift

MCQ (Single Correct Answer)

-0

The resistance offered by an inductor $$\left(X_L\right)$$ in an a.c. circuit is

inversely proportional to inductance and frequency of the alternating current

inversely proportional to frequency of alternating current and directly proportional to inductance

inversely proportional to inductance and directly proportional to the frequency of alternating current

directly proportional to inductance and frequency of alternating current

MHT CET 2022 11th August Evening Shift

MCQ (Single Correct Answer)

-0

A coil having an inductance of $$\frac{1}{\pi} \mathrm{H}$$ is connected in series with a resistance of $$300 \Omega$$. If A.C. Source $$(20 \mathrm{~V}-200 \mathrm{~Hz})$$ is connected across the combination, the phase angle between voltage and current is

$$\tan ^{-1}\left(\frac{3}{4}\right)$$

$$\tan ^{-1}\left(\frac{4}{3}\right)$$

$$\tan ^{-1}\left(\frac{5}{4}\right)$$

$$\tan ^{-1}\left(\frac{4}{5}\right)$$

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