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

When an A.C. source is connected to a inductive circuit,

A
voltage and current are in same phase.
B
voltage is ahead of current in phase.
C
the phase between voltage and current depends upon the value of inductance
D
voltage lags behind current in phase.
2
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 12 English

A
220 V, 2 A
B
110 V, 2 A
C
110 V, 4 A
D
220 V, 1 A
3
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

A transformer has 400 turns in its primary winding and 800 turns in its secondary winding. The primary voltage is $$20 \mathrm{~V}$$ and the load in the secondary is 4 ohm. The current in the primary, assuming it to be an ideal transformer, is

A
40 A
B
20 A
C
4 A
D
2 A
4
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

A group of devices having a total power rating of 500 watt is supplied by an $$\mathrm{AC}$$ voltage $$E=200 \sin \left(3.14 t+\frac{\pi}{4}\right)$$. Then the r.m.s. value of the circuit current is

A
500 A
B
1 A
C
200 A
D
5 A
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