1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

In the $$\mathrm{A} . \mathrm{C}$$. circuit given below, voltmeters $$\mathrm{V}_1$$ and $$\mathrm{V}_2$$ read $$100 \mathrm{~V}$$ each. Find the reading of the voltmeter $$\mathrm{V}_3$$ and the ammeter $$\mathrm{A}$$.

COMEDK 2024 Evening Shift Physics - Alternating Current Question 1 English

A
220 V, 2 A
B
110 V, 2 A
C
110 V, 4 A
D
220 V, 1 A
2
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A transformer which steps down $$330 \mathrm{~V}$$ to $$33 \mathrm{~V}$$ is to operate a device having impedance $$110 \Omega$$. The current drawn by the primary coil of the transformer is :

A
0.3 A
B
0.03 A
C
3 A
D
1.5 A
3
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A coil of inductance $$1 \mathrm{H}$$ and resistance $$100 \Omega$$ is connected to an alternating current source of frequency $$\frac{50}{\pi} \mathrm{~Hz}$$. What will be the phase difference between the current and voltage?

A
90$$^\circ$$
B
30$$^\circ$$
C
60$$^\circ$$
D
45$$^\circ$$
4
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A coil offers a resistance of $$20 \mathrm{~ohm}$$ for a direct current. If we send an alternating current through the same coil, the resistance offered by the coil to the alternating current will be :

A
$$0 \Omega$$
B
Greater than $$20 \Omega$$
C
Less than $$20 \Omega$$
D
$$20 \Omega$$
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