JKCET SERIES Physics
Semiconductor Electronics Materials Devices And Simple Circuits
17 previous year questions.
Volume: 17 Ques
Yield: Medium
High-Yield Trend
2
2019 1
2018 1
2017 2
2015 2
2014 3
2012 1
2010 1
2009 2
2008 1
2007 1
2003 Chapter Questions 17 MCQs
01
PYQ 2003
medium
physics ID: jkcet-20
What is the name of the level formed due to impurity atom in -type in the forbidden gap?
1
Donor level
2
Acceptor level
3
Conduction level
4
Forbidden level
02
PYQ 2007
medium
physics ID: jkcet-20
In breakdown region, a Zener diode behaves as a
1
constant current source
2
constant voltage source
3
constant resistance source
4
constant power source
03
PYQ 2008
medium
physics ID: jkcet-20
When a junction diode is connected in forward bias its barrier potential
1
decreases and less current flows in the circuit
2
decreases and more current flows in the circuit
3
increases and more current flows in the circuit
4
decreases and no current flows in the circuit
04
PYQ 2008
medium
physics ID: jkcet-20
An intrinsic semiconductor at temperature behaves like
1
conductor
2
p-type semiconductor
3
n-type semiconductor
4
insulator
05
PYQ 2009
medium
physics ID: jkcet-20
In a transistor, the base is
1
a conductor with high conductivity
2
an insulator
3
an extrinsic semiconductor
4
an intrinsic semiconductor
06
PYQ 2010
medium
physics ID: jkcet-20
The following figure represents
1
OR gate
2
NOT gate
3
NOR gate
4
AND gate
07
PYQ 2012
hard
physics ID: jkcet-20
What is the order of the reverse saturation current before break down in a Zener diode?
1
Ampere
2
Milli-ampere
3
It depends on the applied voltage
4
Micro-ampere
08
PYQ 2012
medium
physics ID: jkcet-20
Which logic gate does the following truth table represent?
1
NAND
2
AND
3
OR
4
NOR
09
PYQ 2012
medium
physics ID: jkcet-20
Which of the following is a semiconductor?
1
2
3
4
10
PYQ 2014
medium
physics ID: jkcet-20
For transistor the value of is then, the value of is
1
2
3
4
11
PYQ 2014
medium
physics ID: jkcet-20
A zener diode is used as
1
an amplifier
2
a rectifier
3
a voltage regulator
4
a light emitting device
12
PYQ 2015
medium
physics ID: jkcet-20
In an transistor, is
1
Intrinsic semiconductor
2
Emitter
3
Collector
4
Base
13
PYQ 2015
medium
physics ID: jkcet-20
If the forward bias voltage in a junction diode is decreased, the length of depletion region will
1
Increase
2
Decrease
3
Not change
4
Initially increase and then decrease
14
PYQ 2017
medium
physics ID: jkcet-20
An extrinsic semiconductor with electrons as majority carriers can be obtained by doping or with
1
bismuth
2
boron
3
indium
4
gallium
15
PYQ 2018
medium
physics ID: jkcet-20
The intrinsic carrier concentration of silicon sample at is . What is the density of minority carrier ? (after doping, the number of majority carriers is )
1
2
3
4
16
PYQ 2019
medium
physics ID: jkcet-20
A zener breakdown occurs in a zener diode when
1
it is forward biased and electric field intensity decreases beyond a certain value
2
it is reverse biased and electric field intensity exceeds a certain value
3
potential barrier is reduced to zero
4
forward current exceeds certain value
17
PYQ 2019
medium
physics ID: jkcet-20
In a semiconductor, the conductivity increases with the increase in temperature due to
1
increase in relaxation time
2
decrease in the number density of current carriers
3
decrease in both the number density of current carriers and relaxation time
4
increase in the number density of current carriers and decrease in the relaxation time
About Semiconductor Electronics Materials Devices And Simple Circuits - JKCET
Semiconductor Electronics Materials Devices And Simple Circuits is a vital chapter for JKCET aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
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