Welcome to our comprehensive MCQ guide designed to help you prepare for the HTET 2023 examination, focusing on the topic of "Semiconductor." Aspiring teachers in Haryana are well-aware of the significance of the Haryana Teacher Eligibility Test (HTET) in their career journey. To ace this exam, a solid understanding of semiconductor physics is essential, as it forms a crucial part of the science curriculum. In this blog, we'll provide you with a strategic approach to tackling semiconductor-related MCQs, along with key insights to boost your confidence and ensure success.
1. What is the basic building block of semiconductors?
A)
Electrons
B)
Atoms
C)
Ions
D)
Molecules
2. In which of the following materials do electrons
have the highest mobility?
A)
Conductors
B)
Insulators
C)
Semiconductors
D)
Superconductors
3. Silicon (Si) and Germanium (Ge) are examples of
which type of semiconductor?
A)
Intrinsic
B)
Extrinsic
C)
P-type
D)
N-type
4. What is the typical energy gap (bandgap) of a
semiconductor material?
A)
Less
than 1 eV
B)
1
eV to 3 eV
C)
3
eV to 5 eV
D)
More
than 5 eV
5. When silicon is doped with boron (B), it becomes a
____________ semiconductor.
A)
P-type
B)
N-type
C)
Intrinsic
D)
Extrinsic
6. Which semiconductor device is used for amplification
and switching of electronic signals?
A)
Diode
B)
Transistor
C)
Capacitor
D)
Resistor
7. What is the majority charge carrier in an N-type
semiconductor?
A)
Electrons
B)
Holes
C)
Protons
D)
Neutrons
8. Which of the following is NOT a common semiconductor
material?
A)
Silicon
(Si)
B)
Gallium
Arsenide (GaAs)
C)
Copper
(Cu)
D)
Gallium
Nitride (GaN)
9. In a PN junction diode, the region near the P-type
material is called the:
A)
Anode
B)
Cathode
C)
Depletion
region
D)
Conduction
band
10. What is the function of a semiconductor diode?
A)
To
amplify signals
B)
To
store electrical energy
C)
To
control the flow of current in one direction
D)
To
convert mechanical energy into electrical energy
11. Which of the following doping materials is typically
used to create an N-type semiconductor?
A)
Boron
(B)
B)
Phosphorus
(P)
C)
Aluminum
(Al)
D)
Silicon
(Si)
12. What is the primary function of a semiconductor
junction diode?
A)
To
amplify signals
B)
To
emit light when biased
C)
To
convert AC to DC
D)
To
allow current flow in only one direction
13. In a P-type semiconductor, the majority charge
carriers are:
A)
Electrons
B)
Holes
C)
Protons
D)
Neutrons
14. What is the purpose of a Zener diode in electronic
circuits?
A)
To
rectify AC voltage
B)
To
amplify signals
C)
To
regulate voltage
D)
To
function as a light sensor
15. Which semiconductor device has three layers, namely
emitter, base, and collector?
A)
Diode
B)
MOSFET
C)
BJT
(Bipolar Junction Transistor)
D)
SCR
(Silicon-Controlled Rectifier)
16. What happens when a forward bias voltage is applied
to a PN junction diode?
A)
Current
flows easily in the reverse direction.
B)
No
current flows.
C)
Current
flows easily in the forward direction.
D)
The
diode emits light.
17. Which of the following materials is a compound
semiconductor?
A)
Silicon
(Si)
B)
Germanium
(Ge)
C)
Gallium
Arsenide (GaAs)
D)
Copper
(Cu)
18. What type of semiconductor material is obtained when
a small amount of impurity is added to an intrinsic semiconductor?
A)
Extrinsic
semiconductor
B)
Superconductor
C)
Conductor
D)
Insulator
19. Which semiconductor component is primarily used for
signal amplification in electronic circuits?
A)
Transistor
B)
Capacitor
C)
Diode
D)
Resistor
20. What is the primary advantage of using semiconductor
materials in electronic devices compared to conductors and insulators?
A)
Semiconductors
have zero resistance.
B)
Semiconductors
have high thermal conductivity.
C)
Semiconductors
can be easily melted and molded.
D)
Semiconductors
can be controlled to conduct or insulate as needed.
21. In a P-N junction diode, what is the region between the P-type and N-type materials where charge carriers are depleted called?
A) Transition region
B) Barrier region
C) Depletion region
D) Conduction region
22. Which of the following properties of a semiconductor makes it suitable for use in electronic devices?
A) High thermal conductivity
B) Low resistance
C) Variable resistance
D) High density
23. What happens when you apply a reverse bias voltage to a diode?
A) Current flows easily in the reverse direction.
B) No current flows.
C) Current flows easily in the forward direction.
D) The diode emits light.
24. Which of the following semiconductor devices is used for switching high-power applications and typically has three terminals: gate, drain, and source?
A) Diode
B) Bipolar Junction Transistor (BJT)
C) Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET)
D) Zener diode
25. What is the primary advantage of using gallium nitride (GaN) semiconductors in high-frequency and high-power applications?
A) Low cost
B) High thermal conductivity
C) High breakdown voltage
D) High electron mobility
26. Which semiconductor material is commonly used in light-emitting diodes (LEDs)?
A) Silicon (Si)
B) Germanium (Ge)
C) Gallium Arsenide (GaAs)
D) Copper (Cu)
27. What is the primary function of a semiconductor laser diode?
A) To regulate voltage
B) To amplify signals
C) To emit coherent light
D) To control the flow of current in one direction
28. Which type of semiconductor device is often used as a voltage regulator in power supply circuits to maintain a constant output voltage?
A) Transistor
B) Capacitor
C) Zener diode
D) Resistor
29. In which direction does current flow in an NPN transistor when it is in the "ON" state?
A) From the emitter to the collector
B) From the collector to the emitter
C) From the base to the emitter
D) From the emitter to the base
30. What is the primary purpose of a Schottky diode?
A) To regulate voltage
B) To amplify signals
C) To emit light
D) To reduce switching losses
31. Which of the following statements about intrinsic semiconductors is correct?
A) They have an equal number of electrons and holes.
B) They are created by adding impurities to pure semiconductor materials.
C) They conduct electricity well even at room temperature.
D) They have a filled valence band and an empty conduction band.
32. What is the purpose of a rectifier diode in an electronic circuit?
A) To amplify signals
B) To convert AC to DC
C) To regulate voltage
D) To emit light
33. Which of the following materials is an example of an insulator?
A) Silicon (Si)
B) Copper (Cu)
C) Glass
D) Germanium (Ge)
34. What happens when a forward bias voltage is applied to a P-N junction diode?
A) Current flows easily in the reverse direction.
B) No current flows.
C) Current flows easily in the forward direction.
D) The diode emits light.
35. Which semiconductor component is primarily used for storing charge in electronic circuits?
A) Transistor
B) Capacitor
C) Diode
D) Resistor
36. Which semiconductor device is often used as a switch in digital circuits?
A) Bipolar Junction Transistor (BJT)
B) Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET)
C) Zener diode
D) Light-Emitting Diode (LED)
37. What is the primary function of a Schottky diode?
A) To regulate voltage
B) To amplify signals
C) To emit light
D) To reduce switching losses
38. In a P-N junction diode, which region has a higher concentration of electrons?
A) P-type
B) N-type
C) Depletion region
D) Neither P-type nor N-type
39. What is the primary function of a photodiode in electronic devices?
A) To regulate voltage
B) To amplify signals
C) To emit light
D) To detect light and convert it into an electrical signal
40. Which of the following statements about N-type semiconductors is correct?
A) They have an excess of electrons.
B) They are often created by adding a group III element as an impurity.
C) They have a completely filled valence band.
D) They are typically used as rectifiers.
41. Which of the following statements about intrinsic semiconductors is correct?
A) They have an equal number of electrons and holes.
B) They are created by adding impurities to pure semiconductor materials.
C) They conduct electricity well even at room temperature.
D) They have a filled valence band and an empty conduction band.
42. What is the purpose of a rectifier diode in an electronic circuit?
A) To amplify signals
B) To convert AC to DC
C) To regulate voltage
D) To emit light
43. Which of the following materials is an example of an insulator?
A) Silicon (Si)
B) Copper (Cu)
C) Glass
D) Germanium (Ge)
44. What happens when a forward bias voltage is applied to a P-N junction diode?
A) Current flows easily in the reverse direction.
B) No current flows.
C) Current flows easily in the forward direction.
D) The diode emits light.
45. Which semiconductor component is primarily used for storing charge in electronic circuits?
A) Transistor
B) Capacitor
C) Diode
D) Resistor
46. Which semiconductor device is often used as a switch in digital circuits?
A) Bipolar Junction Transistor (BJT)
B) Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET)
C) Zener diode
D) Light-Emitting Diode (LED)
47. What is the primary function of a Schottky diode?
A) To regulate voltage
B) To amplify signals
C) To emit light
D) To reduce switching losses
48. In a P-N junction diode, which region has a higher concentration of electrons?
A) P-type
B) N-type
C) Depletion region
D) Neither P-type nor N-type
49. What is the primary function of a photodiode in electronic devices?
A) To regulate voltage
B) To amplify signals
C) To emit light
D) To detect light and convert it into an electrical signal
50. Which of the following statements about N-type semiconductors is correct?
A) They have an excess of electrons.
B) They are often created by adding a group III element as an impurity.
C) They have a completely filled valence band.
D) They are typically used as rectifiers.
In conclusion, the Semiconductor MCQs in the HTET 2023 examination can be challenging, but with the right preparation and a strong grasp of the fundamentals, you can confidently tackle them. Remember to practice regularly, refer to authoritative sources, and stay updated with the latest developments in semiconductor technology. Our MCQ guide is designed to be your go-to resource in your HTET preparation journey, helping you master semiconductor concepts and earn the teaching certification you've been working hard for. Best of luck on your HTET 2023 journey!
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