Exam Details
| Subject | Basics Of Electronics Engineering | |
| Paper | ||
| Exam / Course | BTCVI / BTECVI / BTELVI | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages: 3
IBIEL-001 1
B.Tech. (BTCSVI I BTECVI I BTELVI)
Term-End Examination
June, 2016
00366
BIEl-001 BASICS OF ELECTRONICS ENGINEERING
Time: 3 hours Maximum Marks: 70
Note: Attempt any seven questions. All questions carry . equal marks. Use of scientific calculator is allowed.
1. What is doping of a semiconductor? Explain how P and N-type semiconductors are formed. Also draw their energy band diagrams clearly showing the different energy levels. 10
2. What are intrinsic and extrinsic semiconductors? Comment on the conductivity of extrinsic semiconductors. 4
The resistivity of a doped silicon material is 9 x 10^3 ohm-m. The Hall coefficient is 3.6 x m^3 coulomb^-1. Assuming single carrier conduction, find the mobility and density of charge carriers =1.6 x 10^-19 Coulomb). 6
3. Sketch the volt -ampere characteristics of a Zener diode. Indicate the knee on the curve and explain its significance. What happens when the current in Zener decreases below the knee current? 7
What do you mean by drift and diffusion current? 3
4. What is an ideal diode Sketch the characteristics of an ideal diode. 5
Explain the diffusion and depletion layer capacitance of a P-N junction. 5
5. Draw a neat sketch to illustrate the structure of N-channel JFET. Explain its principle of operation. 10
6. Describe the basic principles of phototransistors. 4
Draw the circuits of the various transistor configurations. Why is common emitter configuration mostly used? Give its typical uses. 6
7. Compare PMOS and CMOS transistors. 5
Explain briefly 'semiconductor heterojunctions' and their transit time effect. 5
8. Why are filters used along with rectifiers in the construction of a power supply List the filter types used in power supplies. Explain their effect on rectifier output waveforms. 10
9. A half-wave rectifier has a load resistance of 3.5 k ohm. If the diode and secondary of the transformer have a total resistance of 800 kQ and the AC input voltage has 240 V (peak value)t determine
peak, rms and average values of current through load,
DC power output,
AC power input, and
rectification efficiency. 10
10. Write short notes on any two of the following: 2x5=10
Voltage Regulator
Varactor Diode
Elbers-Moll Model for Transistors
IBIEL-001 1
B.Tech. (BTCSVI I BTECVI I BTELVI)
Term-End Examination
June, 2016
00366
BIEl-001 BASICS OF ELECTRONICS ENGINEERING
Time: 3 hours Maximum Marks: 70
Note: Attempt any seven questions. All questions carry . equal marks. Use of scientific calculator is allowed.
1. What is doping of a semiconductor? Explain how P and N-type semiconductors are formed. Also draw their energy band diagrams clearly showing the different energy levels. 10
2. What are intrinsic and extrinsic semiconductors? Comment on the conductivity of extrinsic semiconductors. 4
The resistivity of a doped silicon material is 9 x 10^3 ohm-m. The Hall coefficient is 3.6 x m^3 coulomb^-1. Assuming single carrier conduction, find the mobility and density of charge carriers =1.6 x 10^-19 Coulomb). 6
3. Sketch the volt -ampere characteristics of a Zener diode. Indicate the knee on the curve and explain its significance. What happens when the current in Zener decreases below the knee current? 7
What do you mean by drift and diffusion current? 3
4. What is an ideal diode Sketch the characteristics of an ideal diode. 5
Explain the diffusion and depletion layer capacitance of a P-N junction. 5
5. Draw a neat sketch to illustrate the structure of N-channel JFET. Explain its principle of operation. 10
6. Describe the basic principles of phototransistors. 4
Draw the circuits of the various transistor configurations. Why is common emitter configuration mostly used? Give its typical uses. 6
7. Compare PMOS and CMOS transistors. 5
Explain briefly 'semiconductor heterojunctions' and their transit time effect. 5
8. Why are filters used along with rectifiers in the construction of a power supply List the filter types used in power supplies. Explain their effect on rectifier output waveforms. 10
9. A half-wave rectifier has a load resistance of 3.5 k ohm. If the diode and secondary of the transformer have a total resistance of 800 kQ and the AC input voltage has 240 V (peak value)t determine
peak, rms and average values of current through load,
DC power output,
AC power input, and
rectification efficiency. 10
10. Write short notes on any two of the following: 2x5=10
Voltage Regulator
Varactor Diode
Elbers-Moll Model for Transistors
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- Advance Microprocessor And Architecture
- Analog and Mixed Mode VLSI Design
- Analog Communication
- Analog Electronic Circuits
- Analog Integrated Circuits Design
- Antennas and Propagation
- B10-Informatics
- Basics Of Electronics Engineering
- Computer Architecture
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- Digital Electronics
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- Electromagnetic Field Theory
- Electronic Measurement and Inst
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- Embedded System Design
- Information Theory And Coding
- Linear Integrated Circuits
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- Microwave And Radar Engineering
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