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1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
A light bulb rated $100$ W is connected to an AC source of $220$ V, $50$ Hz. The rms current through the bulb is
A
$0.454$ A
B
$0.545$ A
C
$2.20$ A
D
$0.22$ A
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
In a circuit containing a pure resistor connected to an AC source,
A
Voltage leads the current by $90^\circ$
B
Current leads the voltage by $90^\circ$
C
Voltage and current are in same phase with each other
D
Current leads the voltage by $180^\circ$
3
KCET 2025
MCQ (Single Correct Answer)
+1
-0

In domestic electric mains supply, the voltage and the current are

A
AC voltage and DC current
B
DC voltage and DC current
C
DC voltage and AC current
D
AC voltage and AC current
4
KCET 2025
MCQ (Single Correct Answer)
+1
-0

A sinusoidal voltage produced by an AC generator at any instant t is given by an equation $\mathrm{V}=311 \sin 314$ t. The rms value of voltage and frequency are respectively

A
$200 \mathrm{~V}, 50 \mathrm{~Hz}$
B
$220 \mathrm{~V}, 100 \mathrm{~Hz}$
C
$220 \mathrm{~V}, 50 \mathrm{~Hz}$
D
$200 \mathrm{~V}, 100 \mathrm{~Hz}$
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