1
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
2
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
$200 \mathrm{~V}, 100 \mathrm{~Hz}$
3
KCET 2025
MCQ (Single Correct Answer)
+1
-0

A series LCR circuit containing an AC source of 100 V has an inductor and a capacitor of reactances $24 \Omega$ and $16 \Omega$ respectively. If a resistance of $6 \Omega$ is connected in series, then the potential difference across the series combination of inductor and capacitor only is

A
80 V
B
400 V
C
8 V
D
40 V
4
KCET 2025
MCQ (Single Correct Answer)
+1
-0

$$ \text { Match the following types of waves with their wavelength ranges } $$

$$ \begin{array}{|l|l|} \hline \text { Waves } & \text { Wavelength ranges } \\ \hline \text { i. Microwave } & \text { a. } 700 \mathrm{~nm} \text { to } 400 \mathrm{~nm} \\ \hline \text { ii. Visible light } & \text { b. } 1 \mathrm{~nm} \text { to } 10^{-3} \mathrm{~nm} \\ \hline \text { iii. Ultraviolet } & \text { c. } 0.1 \mathrm{~m} \text { to } 1 \mathrm{~mm} \\ \hline \text { iv. X-rays } & \text { d. } 400 \mathrm{~nm} \text { to } 1 \mathrm{~nm} \\ \hline \end{array} $$
A
i-c, ii-a,iii-d, iv-b
B
i-d, ii-b, iii-c, iv-a
C
i-b, ii-c, iii-a, iv-d
D
i-a, ii-d, iii-b, iv-c
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