Dear Students
Long awaited and most memorable day of college life that is convocation is going to be held on 16th and 17th of February 2012.
All passed out form PIET are welcome to attend their own function
Tuesday, February 14, 2012
Thursday, January 5, 2012
Important Questions / Topics for Final exam of SDC B.Tech(ECE) 3rd Semester
Hey Students
All the best for semester exams
Here i am giving some important questions here for SDC paper.
prepare them.
Some important Questions/Topics for Semiconductor Devices & Circuits exam B.Tech.(ECE) 3rd Semester
1) Draw Circuit diagram of half wave rectifier and Full wave rectifier. And calculate various parameters for them.
2) Explain working of shunt capacitor filter with the help of neat and clean diagram.
3) What is Photo Electric effect? name the devices
Hint:- In the photoelectric effect, electrons are emitted from matter (metals and non-metallic solids, liquids or gases) as a consequence of their absorption of energy from electromagnetic radiation of very short wavelength, such as visible or ultraviolet light.
- Photo conductive effect (When light is absorbed by a material such as a semiconductor, the number of free electrons and electron holes changes and raises its electrical conductivity.)- devices – photo diodes, photo transistors
- Photo resistive effect (When light is absorbed by a material its resistance decreases with increasing incident light intensity) –devices – Light dependent resistance (LDR)
- Photo emissive effect (When incident particles of sufficient energy, when hitting a surface or passing through some material, induce the emission of electrons or ions) – devices – photo multiplier tubes.
- Photo voltaic effect (The photo voltaic effect is the creation of voltage or electric current in a material upon exposure to light) – devices – solar cells
4) What is need of voltage regulator? And its types
5) Explain SMPS (switch mode power supply) in detail with diagram and working.
6) Draw and explain characteristics of transistor in CE configuration.
7) Derive h-parameter model for two port network.
8) Draw h-parameter equaling circuit of transistor amplifier in CE configuration
9) Analyze CE amplifier circuit using h-parameter model.
10) Explain miller’s theorem.
11) Explain frequency response of R-C coupled amplifier
12) What is the need of transistor biasing? What is stability factor derive expression.
13) Draw different biasing circuits
14) Explain self biasing circuit
15) Write a note on High frequency response of Transistor amplifier
16) Compare positive and negative feedback
17) Draw diagram of different feedback topologies and types of amplifiers.
18) State and explain Barkhausen’s criteria.
19) Draw circuit diagram of different types of oscillators.
20) What is the difference between an ordinary amplifier and power amplifier?
21) Explain types of power amplifier.
22) Draw and explain JFET characteristics.
23) Derive small signal equivalent circuit of FET amplifier
24) Explain Enhancement mode and Depletion mode MOSFET.
25) Write a note on V-MOSFET.
26) Draw different biasing circuits for FET (common source, common drain, common gate).
All the best for semester exams
Here i am giving some important questions here for SDC paper.
prepare them.
Some important Questions/Topics for Semiconductor Devices & Circuits exam B.Tech.(ECE) 3rd Semester
1) Draw Circuit diagram of half wave rectifier and Full wave rectifier. And calculate various parameters for them.
2) Explain working of shunt capacitor filter with the help of neat and clean diagram.
3) What is Photo Electric effect? name the devices
Hint:- In the photoelectric effect, electrons are emitted from matter (metals and non-metallic solids, liquids or gases) as a consequence of their absorption of energy from electromagnetic radiation of very short wavelength, such as visible or ultraviolet light.
- Photo conductive effect (When light is absorbed by a material such as a semiconductor, the number of free electrons and electron holes changes and raises its electrical conductivity.)- devices – photo diodes, photo transistors
- Photo resistive effect (When light is absorbed by a material its resistance decreases with increasing incident light intensity) –devices – Light dependent resistance (LDR)
- Photo emissive effect (When incident particles of sufficient energy, when hitting a surface or passing through some material, induce the emission of electrons or ions) – devices – photo multiplier tubes.
- Photo voltaic effect (The photo voltaic effect is the creation of voltage or electric current in a material upon exposure to light) – devices – solar cells
4) What is need of voltage regulator? And its types
5) Explain SMPS (switch mode power supply) in detail with diagram and working.
6) Draw and explain characteristics of transistor in CE configuration.
7) Derive h-parameter model for two port network.
8) Draw h-parameter equaling circuit of transistor amplifier in CE configuration
9) Analyze CE amplifier circuit using h-parameter model.
10) Explain miller’s theorem.
11) Explain frequency response of R-C coupled amplifier
12) What is the need of transistor biasing? What is stability factor derive expression.
13) Draw different biasing circuits
14) Explain self biasing circuit
15) Write a note on High frequency response of Transistor amplifier
16) Compare positive and negative feedback
17) Draw diagram of different feedback topologies and types of amplifiers.
18) State and explain Barkhausen’s criteria.
19) Draw circuit diagram of different types of oscillators.
20) What is the difference between an ordinary amplifier and power amplifier?
21) Explain types of power amplifier.
22) Draw and explain JFET characteristics.
23) Derive small signal equivalent circuit of FET amplifier
24) Explain Enhancement mode and Depletion mode MOSFET.
25) Write a note on V-MOSFET.
26) Draw different biasing circuits for FET (common source, common drain, common gate).
Monday, January 2, 2012
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