Exam Details
| Subject | Electrical And Electronics Engineering Materials | |
| Paper | ||
| Exam / Course | B.Tech. VIEP- Electrical Engineering III (BTCSVI/BTECVI/BTELVI) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages: 3 IBIEE-01SI B.Tech. -VIEP -ELECTRICAL ENGINEERING (BTELVI) Term-End 0084..5 December, 2016
BIEE-013 AND ELECTRONICS ENGINEERING MATERIALS
Time: 3 hours Maximum Marks: 70
Note:
Attempt any seven questions.
All questions carry equal marks.
Symbols used have their usual meaning.
Use of scientific calculator is allowed;
1. Differentiate between Schottky and Frenkel defects. 5
Find the Miller indices of a plane that makes intercepts 3 on x-axis, 1 on y-axis and 5 on z-axis. 5
2. What is Bragg's law? Define Bragg's planes. 5
Define forbidden gap and differentiate the forbidden energy gap in case of a conductor, an insulator and a semi conductor. 5
3. Enumerate the various factors affecting resistivity of conductors. Deduce the relationship among these factors. 5
What is thermionic emission Discuss thermoelectric effect. 5
4. Explain the phenomenon of superconductivity and name anyone superconducting material. 5
Deduce the conductivity relationship for a p-type semiconductor. 5
5. Describe the. construction and working of a p-n junction diode and explain drift and diffusion currents. Give the expression for diode current 10
6. Discuss Hall effect in detail. How do we identify an unknown piece of semiconductor to be n-type or p-type, with the help of a multimeter 10
7. Compare between soft and hard magnetic materials. Draw a typical hysteresis curve for a soft magnetic material. 10
8. Explain magnetostriction effect in brief. 5
The resistivity of Ge at room temperature is 0.47 ohm-m. Find the carrier density of Ge at room temperature for electron mobility
0.42 m^2/volt-sec and hole mobility
0.20 m^2/volt-sec. 5
9. Explain the working mechanism of the following: 10
p-n junction diode
FET
10. Write short notes on any two of the following 2 x 5=10
Energy Band in Solids
Continuity Equation
Permanent Magnetic Material
Crystal Growth Techniques
BIEE-013 AND ELECTRONICS ENGINEERING MATERIALS
Time: 3 hours Maximum Marks: 70
Note:
Attempt any seven questions.
All questions carry equal marks.
Symbols used have their usual meaning.
Use of scientific calculator is allowed;
1. Differentiate between Schottky and Frenkel defects. 5
Find the Miller indices of a plane that makes intercepts 3 on x-axis, 1 on y-axis and 5 on z-axis. 5
2. What is Bragg's law? Define Bragg's planes. 5
Define forbidden gap and differentiate the forbidden energy gap in case of a conductor, an insulator and a semi conductor. 5
3. Enumerate the various factors affecting resistivity of conductors. Deduce the relationship among these factors. 5
What is thermionic emission Discuss thermoelectric effect. 5
4. Explain the phenomenon of superconductivity and name anyone superconducting material. 5
Deduce the conductivity relationship for a p-type semiconductor. 5
5. Describe the. construction and working of a p-n junction diode and explain drift and diffusion currents. Give the expression for diode current 10
6. Discuss Hall effect in detail. How do we identify an unknown piece of semiconductor to be n-type or p-type, with the help of a multimeter 10
7. Compare between soft and hard magnetic materials. Draw a typical hysteresis curve for a soft magnetic material. 10
8. Explain magnetostriction effect in brief. 5
The resistivity of Ge at room temperature is 0.47 ohm-m. Find the carrier density of Ge at room temperature for electron mobility
0.42 m^2/volt-sec and hole mobility
0.20 m^2/volt-sec. 5
9. Explain the working mechanism of the following: 10
p-n junction diode
FET
10. Write short notes on any two of the following 2 x 5=10
Energy Band in Solids
Continuity Equation
Permanent Magnetic Material
Crystal Growth Techniques
Other Question Papers
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Subjects
- Active Filter Design
- Advanced Control System
- Advanced Power Electronics
- Applied Electromagnetics
- Basics Of Electrical Engineering
- Computer Process Control
- Control System
- Digital Electronics
- Electric Energy Utilization
- Electrical And Electronics Engineering Materials
- Electrical Instrumentation
- Electrical Machine - I
- Electrical Machines - Ii
- Electrical Machines And Electronics
- Electrical Measurements And Measuring Instruments
- Electro Mechanical Energy Conversion - I
- Electro-Mechanical Energy Conversion - Ii
- Electro-Mechanical Energy Conversion-Iii
- Electromagnetic Theory
- Energy Auditing And Analysis
- High Voltage Engineering
- Industrial Drives
- Micro Controllers
- Microprocessor And Applications
- Network Theory
- Power Quality Issues And Remedial Measures
- Power System
- Power System - I
- Stochastic Control Systems
- Switchgear And Protection