Semiconductor/Semiconductor Mcq Question Set 2 Sample Test,Sample questions

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Question: 
 A trivalent impurity has …….. valence electrons.

1.4

2.5

3.6

4.3

Posted Date:-2022-03-09 09:06:19

Question: 
 In case of semiconductors, recombination is merging of

1.An electrons with a hole

2.An outside electron with semiconductor electrons

3.Two or more electrons

4.Two or more holes

Posted Date:-2022-03-09 08:44:55

Question: 
 The forbidden band in germanium at 00K is

1.0.03 eV

2.0.785 eV

3.1.5 eV

4.2.0 eV

Posted Date:-2022-03-09 08:51:11

Question: 
 The temperature co-efficient of an intrinsic semiconductor is.......

1.Zero

2.Positive

3.Negative

4.None of them

Posted Date:-2022-03-09 08:45:43

Question: 
 When a pentavalent impurity is added to a pure semiconductor, it becomes ……..

1.an insulator

2.an intrinsic semiconductor

3.p-type semiconductor

4.n-type semiconductor

Posted Date:-2022-03-09 09:05:09

Question: 
 Which of the following doping elements would not be suitable for converting intrinsic semiconductor

1.Phosphorous

2.Indium

3.Antimony

4.Arsenic

Posted Date:-2022-03-09 08:43:46

Question: 
.... is used to describe the static V/I characteristic of a junction diode

1.Bolzmann diode equation

2.Richardson-Dushman equation

3.Child's Three half-power law

4.Einstein's photoelectric equation

Posted Date:-2022-03-09 08:52:45

Question: 
...... are immobile.

1.Ions

2.Electrons

3.Holes

4.none of the above

Posted Date:-2022-03-09 08:55:12

Question: 
....... has the highest mobility.

1.Electron

2.Positive ions

3.Negative ions

4.Neutron

Posted Date:-2022-03-09 08:46:47

Question: 
A hole in a semiconductor is defined as ……..

1.a free electron

2.the incomplete part of an electron pair bond

3.a free proton

4.A free neutron

Posted Date:-2022-03-09 09:06:59

Question: 
A pentavalent impurity has …….. valence electrons.

1.3

2.5

3.4

4.6

Posted Date:-2022-03-09 09:05:54

Question: 
A room temperature P-type material will have....

1.More of electrons

2.More of holes

3.Equal number of electrons and holes

4.None of the mentioned

Posted Date:-2022-03-09 08:48:37

Question: 
A semiconductor has …….. temperature coefficient of resistance.

1.positive

2.zero

3.negative

4.none of the above

Posted Date:-2022-03-09 09:01:40

Question: 
A semiconductor has generally …….. valence electrons.

1.2

2.3

3.6

4.4

Posted Date:-2022-03-09 09:02:42

Question: 
A semiconductor is formed by …….. bonds.

1.covalent

2.electrovalent

3.co-ordinate

4.none of the above

Posted Date:-2022-03-09 09:01:15

Question: 
A zener diode is invariably used with

1.Reverse bias

2.Forward bias

3.Zero bias

4.Any of the above

Posted Date:-2022-03-09 08:55:36

Question: 
Acceptor-type impurities

1.Can be added to silicon but not to germanium

2.Create excess electrons

3.Must have three velence electrons

4.Must have five valence electrons

Posted Date:-2022-03-09 08:53:08

Question: 
Addition of impurity in the ratio of 1 in 10 to a pure or intrinsic semiconductor

1.Increases its conductivity nearly 10 times

2.Increases its conductivity nearly 100 times

3.Decreases its conductivity nearly 100 times

4.Increases its resistivity nearly 100 times

Posted Date:-2022-03-09 08:56:56

Question: 
Addition of pentavalent impurity to a semiconductor creates many ……..

1.free electrons

2.holes

3.valence electrons

4.Bound electrons

Posted Date:-2022-03-09 09:05:31

Question: 
As the temperature of a semiconductor increases its

1.Conductivity increases

2.Resistivity increases

3.Atomic number decreases

4.Temperature co-efficient becomes zero

Posted Date:-2022-03-09 08:43:19

Question: 
At room temperature N-type material will have....

1.More of electrons

2.More of holes

3.Equal number of electrons and holes

4.None of the mentioned

Posted Date:-2022-03-09 08:48:16

Question: 
Consider the energy level diagram of an intrinsic semiconductor. The Fermi level lies in the

1.Valence band

2.Forbidden band or

3.Conduction band or

4.It can be at any of the above locations depending upon the doping concentration and temperature

Posted Date:-2022-03-09 08:49:35

Question: 
For a germanium P-N junction, the barrier potential is nearly.......

1.0.15 V

2.0.3 V

3.0.45 V

4.0.6 V/span>

Posted Date:-2022-03-09 08:54:02

Question: 
For a half wave rectified sine wave the ripple factor is

1.1.65

2.1.45

3.1.21

4.1.00

Posted Date:-2022-03-09 09:00:05

Question: 
For a silicon P-N junction, the barrier potential is about

1.0.7 V

2.0.8 V

3.0.9 V

4.1.0 V

Posted Date:-2022-03-09 08:54:23

Question: 
In a semiconductor diode, the barrier offers opposition to

1.Majority carriers in both regions

2.Majority as well as minority carriers in both regions

3.all of the above

4.None of the mentioned

Posted Date:-2022-03-09 08:44:32

Question: 
In any specimen the Hall voltage is proportional to magnetic field β as

1.β

2.β2

3.1/β

4.1/β2

Posted Date:-2022-03-09 08:49:56

Question: 
In order to obtain a P-type germanium, the germanium should be doped with a ........ impurity

1.Trivalent

2.Tetravalent

3.Pentavalent

4.Any of the above

Posted Date:-2022-03-09 08:54:47

Question: 
Intrinsic concentration of charge carriers in a semiconductor varies as

1.T3

2.T2

3.T

4.1/T

Posted Date:-2022-03-09 08:50:20

Question: 
Nucleus is made of

1.Electrons and protons

2.Photons and neutrons

3.Photons and neutrons

4.Photons and electrons

Posted Date:-2022-03-09 08:49:07

Question: 
Ripple factor is the ratio of ...value to ... value

1.r.m.s., peak

2.peak, D.C

3.r.m.s., D.C

4.peak, r.m.s

Posted Date:-2022-03-09 08:56:26

Question: 
The atomic number of germanium is.......

1.4

2.8

3.16

4.32

Posted Date:-2022-03-09 08:51:58

Question: 
The conduction band

1.Is always above the forbidden energy level

2.Is the region of free electrons

3.Concentrates holes for the flow of current

4.Is a range of energies corresponding to the energies of the free electrons

Posted Date:-2022-03-09 08:45:19

Question: 
The crystal diode is used as a

1.Rectifer

2.Amplifier

3.Oscillator

4.Any of the above

Posted Date:-2022-03-09 08:56:00

Question: 
The dynamic resistance of a diode varies as

1.I the current

2.I2

3.1/I

4.1/I2

Posted Date:-2022-03-09 08:50:46

Question: 
The forward region of a semiconductor diobe characteristic curve is where diode appears as

1.High resistance

2.An ON switch

3.An OFF switch

4.A capacitor

Posted Date:-2022-03-09 08:44:10

Question: 
The maximum reverse voltage that can be applied to an ordinary semiconductor diode without irreverslible damage is called .....

1.Cut-off voltage

2.Avalanche breakdown voltage

3.Peak inverse voltage

4.Zener voltage

Posted Date:-2022-03-09 08:57:52

Question: 
The most commonly used semiconductor is ……..

1.germanium

2.silicon

3.carbon

4.Sulphur

Posted Date:-2022-03-09 09:02:04

Question: 
The movement of a hole results from.......

1.Excitation due to high temperature

2.Change in number of protons in the atom

3.The vacancy filled by a valence electron from the neighbouring atom

4.None of above

Posted Date:-2022-03-09 08:53:31

Question: 
The resistivity of a semiconductor lies

1.Below 10-6

2.Between 10-6 to 102 ohm-metre

3.Between 10-6 to 104 ohm-metre

4.Above 104 ohm-metre

Posted Date:-2022-03-09 08:58:32

Question: 
The resistivity of pure germanium under standard conditions is about ……..

1.6 × 104 Ω cm

2.60 Ω cm

3.3 × 106 Ω cm

4.6 × 10−4 Ω cm

Posted Date:-2022-03-09 09:03:04

Question: 
The resistivity of pure silicon is about ……..

1.100 Ω cm

2.6000 Ω cm

3.3 × 105 Ω cm

4.1.6 × 10− 8 Ω cm

Posted Date:-2022-03-09 09:03:29

Question: 
The strength of a semiconductor crystal comes from ……..

1.forces between nuclei

2.forces between protons

3.electron-pair bonds

4.none of the above

Posted Date:-2022-03-09 09:04:39

Question: 
The temperature co-efficient of an extrinsic semiconductor is.......

1.Zero

2.Positive

3.Negative

4.none of the above

Posted Date:-2022-03-09 08:46:16

Question: 
When a pure semiconductor is heated, its resistance ……..

1.goes up

2.goes down

3.remains the same

4.cannot say

Posted Date:-2022-03-09 09:03:52

Question: 
Which of the following elements belog to the same group of periodic tables as that of silicon and germanium

1.Phosphorous

2.Carbon

3.Sodium

4.Boron

Posted Date:-2022-03-09 08:52:20

Question: 
Which of the following is a passive component?

1.Vacumm tube devices

2.Capacitors

3.Semiconductor devices

4.All of the above

Posted Date:-2022-03-09 08:59:42

Question: 
Which of the following is an active device?

1.Electric bulb

2.Transformer

3.SCR

4.Loudspeaker

Posted Date:-2022-03-09 08:59:21

Question: 
Which of the following materials can be used to make a light-emitting diode?

1.Silicon

2.Germanium

3.Gallium arsenide

4.Phosphorescent material

Posted Date:-2022-03-09 08:58:54

Question: 
With increases of reverse bias, the reverse saturation current in P-N diode

1.Increases

2.Remains constant

3.Increases

4.Increases as inverse of reverse bias

Posted Date:-2022-03-09 08:57:20

Posted on by R4R Team

More MCQS

  1. Semiconductor Mcq Question Set 1
  2. Semiconductor Mcq Question Set 2
  3. Semiconductor Mcq Question Set 3
  4. Semiconductor Mcq Question Set 4
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