1
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The semiconductor used for fabrication of visible LEDS must at least have a band gap of
A
0.6 eV
B
1.2 eV
C
1.8 eV
D
0.9 eV
2
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
In a common emitter amplifier, AC current gains 40 and input resistance is $2 \mathrm{k} \Omega$. The load resistance is given as $10 \mathrm{k} \Omega$. Then, the voltage gain is
A
52
B
125
C
178
D
200
3
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
An information signal of frequency 10 kHz is modulated with a carried wave of frequency $3.62 \mathrm{MHz}^{}$ The upper side and lower side frequencies are
A
3650 kHz and 3590 kHz
B
3620 kHz and 3600 kHz
C
3610 kHz and 3580 kHz
D
3600 kHz and 3620 kHz
4
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The time period of revolution of a satellite $T$ around the carth depends on the radius of the circular orbit $R$. mass of the earth $M$ and universal gravitational constant $G$. The expression for $T$, using dimensional analysis is ( $K$ is constant of proportionality)
A
$K \sqrt{\frac{R^2}{G M}}$
B
$K \sqrt{\frac{R}{G M}}$
C
$K \sqrt{\frac{R^3}{G M}}$
D
$K \sqrt{\frac{R^3}{G M^2}}$
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