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1
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

For better tuning of a series $L C R$ circuit in a communication system, the preferred combination is

A

$R=20 \Omega: L=15 \mathrm{H}: \mathrm{C}=35 \mu \mathrm{~F}$

B

$R=15 \Omega: L=40 \mathrm{H}: \mathrm{C}=20 \mu \mathrm{~F}$

C

$R=25 \Omega: L=15 \mathrm{H}: C=45 \mu \mathrm{~F}$

D

$R=15 \Omega: L=20 \mathrm{H}: C=45 \mu \mathrm{~F}$

2
AP EAPCET 2025 - 21st May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In an LCR series circuit, if the potential differences across inductor, capacitor and resistor are $60 \mathrm{~V}, 30 \mathrm{~V}$ and 40 V respectively, then the AC voltage applied to the circuit is

A

50 V

B

70 V

C

130 V

D

60 V

3
AP EAPCET 2025 - 21st May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The resonant frequency of an LC circuit is $f_0$. If a dielectric slab of constant 16 is inserted completely between the plates of the capacitor, then the resonant frequency is

A

$\frac{f}{2}$

B

26

C

$\frac{6}{4}$

D

$4 f$

4
AP EAPCET 2024 - 23th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
An alternating current is given by $i=(3 \sin \omega t+4 \cos \omega t) \mathrm{A}$. The rms current will be
A
$\frac{7}{\sqrt{2}} \mathrm{~A}$
B
$\frac{1}{\sqrt{2}} \mathrm{~A}$
C
$\frac{5}{\sqrt{2}} \mathrm{~A}$
D
$\frac{3}{\sqrt{2}} \mathrm{~A}$
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