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The document outlines key concepts in semiconductor physics, including intrinsic and extrinsic semiconductors, energy band structures, and diode characteristics. It covers various types of diodes such as Zener and varactor diodes, their applications, and the principles of rectification and regulation in power supplies. Additionally, it discusses transistor structures, biasing techniques, and their applications as switches and amplifiers.

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dupatijagadeshkumar
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26 views1 page

Be Question Bank

The document outlines key concepts in semiconductor physics, including intrinsic and extrinsic semiconductors, energy band structures, and diode characteristics. It covers various types of diodes such as Zener and varactor diodes, their applications, and the principles of rectification and regulation in power supplies. Additionally, it discusses transistor structures, biasing techniques, and their applications as switches and amplifiers.

Uploaded by

dupatijagadeshkumar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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UNIT-1

1. Describe the terms intrinsic and extrinsic semiconductors of both P type and N type.
2. Illustrate the concepts of insulator, semiconductor & conductor with help of energy band
structure. OR
Compare the energy band diagram of metals, insulators and semi-conductor.
3. Illustrate the Fermi level in intrinsic and extrinsic semiconductor materials.
4. Give the mathematical analysis and show that the Fermi energy level lies in the centre of
forbidden energy band for an intrinsic semiconductor.
5. Explain the diode biasing and also the diode V-I characteristics.
6. Distinguish Half-Wave and Full-Wave Rectifiers.
7. Derive the ripple factor of half wave and full wave rectifiers.
8. Describe the application of a diode as a Half-Wave Rectifier.
9. Elucidate the need of a filter and Regulator after the rectification process.
10. Elucidate the steps for AC to DC conversion.
11. Illustrate briefly about power supply filters.
12. Describe the need and types of regulators.

UNIT-2
1. What is Zener diode? How it is different from a basic diode, compare in all
aspects. Explain the Zener diode V-I characteristics.
2. Explain the concepts of Zener Breakdown and Avalanche Breakdown.
3. Discuss the applications of Zener diode. OR
Discuss how the Zener diode acts as a voltage regulator.
4. What is varactor diode? Summarize the characteristics.
5. Interpret the working principle of optical diode with neat sketches.

UNIT-3
1. Explicate the structure and operation of basic transistor.
2. What is the need for transistor biasing? Explain at least one type of biasing techniques
with neat circuit diagram?
3. Make use of transistor CE configuration to explain input, output characteristics and
various regions of the configuration in detail.
4. Distinguish the various configurations of transistor.
5. What is Transistor biasing? Explain about fixed bias Technique.
6. What is thermal Runaway in transistor? Explain the method to overcome it.
7. Explicit the application of transistor as a switch.
8. Explicit the application of transistor as an amplifier.

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