Name of the College : Northern India Engineering College
University : Guru Gobind Singh Indraprastha University
Subject Code/Name : ETCS-207/Analog Electronics
Dept : Electronics And Communication Engineering
Degree : BE
Website : gtbit.org
Document Type : Question Bank
Download Model/Sample Question Paper: https://www.pdfquestion.in/uploads/gtbit.org/3367-DEPARTMENT%20OF%20%20ELECTRONICS%20AND%20COMMUNICATION%20ENGINEERING.docx
GTBIT Analog Electronics Question Paper
QUESTION BANK :
UNIT – I
1. Define electron volt? (2)
2. State the relationship between electric field intensity, and potential? (2)
3. An ë beam from rest is accelerated by a potential of 200v. Find the final velocity of the e- ? (2)
Related : GTBIT ETEC208 Communication Circuit And System B.E Question Bank : www.pdfquestion.in/3366.html
4.What is significance of energy levels and energy bands.
5. Calculate the time taken by an e- which has been accelerated through a potential difference of 100 volts to transverse a distance of 2cm.
Given q = 1.602 x 10-19 C & m = 9.1x 10-31 kg (2)
6. What is doping? (2)
7. What is intrinsic and extrinsic semiconductor? (2)
8. What are acceptor & donor? (2)
9. Draw energy-level diagram of intrinsic & extrinsic semi conductor? (2)
UNIT – II
SEMICONDUCTOR DIODES :
PART – A :
1. How a PN junction can be formed? (2)
2. List out the common diode applications? (2)
3. State mass action law? (2)
4. Define avalanche and zener breakdown? (2)
5. What is tunneling? (2)
6. What are the current components of diode? (2)
7. Define forward recovery time and reverse recovery time? (2)
PART – B :
1. Explain the forward and reverse bias operation and VI characteristics of a PN Junction diode. (16)
2. a) Derive the diode current equation? (8)
b) Discuss the current components of PN junction diode? (8)
3. a. Explain any two applications of diode with neat diagram (Clipper & Clamper) (8)
b. Explain the characteristics and applications of Varactor diode? (8)
4. a).Explain the characteristics and applications of zener diode? (8)
b) Explain the mechanism of avalanche and zener break down? (8)
5. Explain the working principle, Characteristics, Applications, advantages & disadvantages of Tunnel diode? (16)
6. Write short notes on the following diodes? (16)
i) Backward diode(4)
ii) p-i-n diode(4)
iii) Point contact diode(4)
iv) Photo diode(4)
7. a) Explain the structure, characteristics and applications of Scotty Diode. (8)
b) Explain the switching characteristics of PN junction diode. (8)
8. a).Discuss about the p-i-n photo diode, APD & LED (12)
b) Define diffusion and drift current (4)
9. Explain how conduction takes place in p – type & n – type Semiconductor? (16)
UNIT – III
BJT & FET :
PART – A :
1. Define pinch – off voltage? (2)
2. Derive the relation between pinch – off voltage & drain current? (2)
3. What is a MOSFET? (2)
4. What is a MESFET? (2)
5.what is difference between bjt’s and mosfet’s?
6. What is CMOS? (2)
7. What is early effect? (2)
PART – B :
1. a. Explain the operation of PNP & NPN transistor? (8)
b. What is transistor? State its types (8)
2. a. Explain the current components of a transistor? (8)
b. Explain the transistor switching time? (8)
3. a) Explain Elber – Moll model (8)
b) Compare CE – CB – CC Configuration? (8)
4. a. Explain the i/p & o/p characteristics (8)
b. What is a FET? State its types? (8)
5. Explain the i/p & o/p Characteristic of CB configuration of a transistor? (16)
6. Explain the i/p & o/p characteristics of CC Configuration of a transistor? (16)
7. Explain the construction & Characteristics of JFET (16)
8. Explain the construction & characteristics of enhancement type MOSFET (16)
9. Explain the construction & Characteristics of depletion mode MOSFET? (8)
UNIT – IV
TRANSISTOR BIASING :
PART – A :
1. What is operating point (or) Q point (or) bias point (or) quotient point? (2)
2. What are the various biasing methods of BJT? (2)
3. What is need for biasing? (2)
4. What is biasing stability? (2)
5. What are the factors that affect the stability of the Q-point? (2)
6. What are the biasing methods of FET? (2)
7. Derive the fixed bias technique, self-bias&voltage divider bias of JFET? (2)
8. In which region transistor has to be operated to act as a) Switch b)an amplifer (2)
9. Define a)DC load line b)AC load line (2)
10. What is reverse saturation current? (2)
11. What is thermal runway? ( 2)
12. What can we analyze from a load line? (2)
13. Derive the stability factor? (2)
PART – B :
1. What are the applications of JFET? Explain JFET as VVR. (16)
2. Prove that the voltage divider biasing provide better stability than other technique?(16)
3. a) Why fixed biased circuit is not used in practice? (8)
b) Derive the stability factor? (8)
4. a) Discuss about the Q-point where to be placed? (8)
b) Explain the use of JFET as a voltage variable resistor (VVR)? (8)
5. Compare FET & BJT? (8)