1
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
If the energy gap of a substance is 5.4 eV , then the substance is
A
insulator
B
conductor
C
p-type semiconductor
D
$n$-type semiconductor
2
AP EAPCET 2024 - 20th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A p-n junction diode is used as
A
an amplifier
B
a rectifier
C
an oscillator
D
a modulator
3
AP EAPCET 2024 - 19th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
When a signal is applied to the input of a transistor, it was found that output signal is phase-shifted by $180^{\circ}$. The transistor configuration is
A
CB - configuration
B
CE - configuration
C
CC - configuration
D
Both CB and CC - configuration
4
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If $n_r$ and $n_h$ are concentrations of electron and holes in a semiconductor, then the intrinsic carrier concentration $n_j$ in thermal equilibrium is

AP EAPCET 2024 - 18th May Morning Shift Physics - Semiconductor Devices and Logic Gates Question 7 English

A
$n=\sqrt{\frac{n_3}{n_n}}$
B
$n=\frac{n_n}{n_n}$
C
$n=\sqrt{7 b n_n}$
D
$n_1=n_0+n_n$
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