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Semiconductor Electronics

114 Questions
All Exams NEET AIIMS
2003 NEET MCQ
AIPMT 2003
A n-p-n transistor conducts when
A.
both collector and emitter are positive with respect to the base
B.
collector is positive and emitter is negative with respect to the base
C.
collector is positive and emitter is at same potential as the base
D.
both collector and emitter are negative with respect to the base
2003 NEET MCQ
AIPMT 2003
Barrier potential of a p-n junction diode does not depened on
A.
diode design
B.
temperature
C.
forward bias
D.
doping density
2003 NEET MCQ
AIPMT 2003
Reverse bias applied to a junction diode
A.
lowers the potential barrier
B.
raises the potential barrier
C.
increases the majority carrier current
D.
increases the minority carrier current
2002 NEET MCQ
AIPMT 2002
The given truth table is for which logic gate

              $\matrix{ A & B & Y \cr 1 & 1 & 0 \cr 0 & 1 & 1 \cr 1 & 0 & 1 \cr 0 & 0 & 1 \cr } $
A.
NAND
B.
XOR
C.
NOR
D.
OR.
2002 NEET MCQ
AIPMT 2002
In a p-n junction
A.
high potential at n side and low potential at p side
B.
high potential at P side and low potential at n side
C.
p and n both are at same potential
D.
undetermined.
2002 NEET MCQ
AIPMT 2002
For the given circuit of p-n junction diode which is correct

AIPMT 2002 Physics - Semiconductor Electronics Question 40 English
A.
in forward bias the voltage across R is V
B.
in reverse bias the voltage across R is V
C.
in forward bias the voltage across R is 2V
D.
in reverse bias the voltage across R is 2V.
2002 NEET MCQ
AIPMT 2002
Number of atom per unit cell in B.C.C.
A.
9
B.
4
C.
2
D.
1
2002 NEET MCQ
AIPMT 2002
For a transistor ${{{I_C}} \over {{I_E}}}$ = 0.96, then current gain for common emitter is
A.
12
B.
6
C.
48
D.
24
2001 NEET MCQ
AIPMT 2001
The given truth table is for which logic gate

              $\matrix{ A & B & Y \cr 1 & 1 & 0 \cr 0 & 1 & 1 \cr 1 & 0 & 1 \cr 0 & 0 & 1 \cr } $
A.
NAND
B.
XOR
C.
NOR
D.
OR
2001 NEET MCQ
AIPMT 2001
For a common base circuit if ${{{I_C}} \over {{I_E}}}$ = 0.98 then current gain for common emitter circuit will be
A.
49
B.
98
C.
4.9
D.
25.5.
2001 NEET MCQ
AIPMT 2001
The current in the circuit will be

AIPMT 2001 Physics - Semiconductor Electronics Question 39 English
A.
5/40 A
B.
5/50 A
C.
5/10 A
D.
5/20 A
2000 NEET MCQ
AIPMT 2000
From the following diode circuit, which diode is in forward biased condition
A.
AIPMT 2000 Physics - Semiconductor Electronics Question 36 English Option 1
B.
AIPMT 2000 Physics - Semiconductor Electronics Question 36 English Option 2
C.
AIPMT 2000 Physics - Semiconductor Electronics Question 36 English Option 3
D.
AIPMT 2000 Physics - Semiconductor Electronics Question 36 English Option 4
2000 NEET MCQ
AIPMT 2000
The cations and anions are arranged in alternate form in
A.
metallic crystal
B.
ionic crystal
C.
covalent crystal
D.
semi-conductor crystal.
2000 NEET MCQ
AIPMT 2000
The correct relation for $\alpha $, $\beta $ for a transistor
A.
$\beta = {{1 - \alpha } \over \alpha }$
B.
$\beta = {\alpha \over {1 - \alpha }}$
C.
$\alpha = {{\beta - 1} \over \beta }$
D.
$\alpha \beta = 1$