ME2255 Electronics & Microprocessors Question Bank : kings.ac.in
Name of the College : Kings College Of Engineering
Department : Mechanical Engineering
Subject : Electronics & Microprocessors
Website : kings.ac.in
Document Type : Question Bank
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Kings Electronics & Microprocessors Question Paper
Unit I
Semiconductors And Rectifiers :
Part-A(2 Marks)
1. What are valence electrons?
2. What is forbidden energy gap?
3. What are conductors? Give examples.
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4. What are insulators? Give examples.
5. What are Semiconductors? Give examples.
6. What are the types of Semiconductor?
7. What is Intrinsic Semiconductor?
8. What is Extrinsic Semiconductor?
9. What are the types of Extrinsic Semiconductor?
10. What is P-type Semiconductor?
11. What is N-type Semiconductor?
12. What is doping?
13. Which is majority and minority carrier in N-type Semiconductor?
14. Which is majority and minority carrier in P-type Semiconductor?
15. What is depletion region in PN junction?
16. What is barrier voltage?
17. What is meant by biasing a PN junction?
18. What are the types of biasing a PN junction?
19. What is forward bias and reverse bias in a PN junction?
20. What is Reverse saturation current?
21. What is reverse break down?
22. Give the diode current equation.
23. Give two applications of PN junction diode.
24. What is rectifier? Give its types.
Part-B :
1. Explain N-type and P-type semiconductor with their energy band diagram. (16)
2. Explain the following :
a. Mobility b. Drift current c. Conductivity d. Diffusion current (16)
3. What is break down in diode? What are its types? (16)
4. Explain PN junction diode with characteristics. (16)
5. Explain zener junction diode with characteristics. (16)
6. Write short note on half wave rectifiers. (16)
7. Write short note on full wave rectifiers. (16)
Unit II
Transistors And Amplifiers :
Part-A : (2Marks)
1. What is a transistor (BJT)?
2. What are the terminals present in a transistor?
3. What is FET?
4. Why FET is called voltage controlled device?
5. What are the two main types of FET?
6. What are the terminals available in FET?
7. What is JFET?
8. What are the types of JFET?
9. What are the two important characteristics of JFET?
10. What is transconductance in JFET?
11. What is amplification factor in JFET?
12. Why do we choose q point at the center of the load line?
13. List out the different types of biasing.
14. What do you meant by thermal runway?
15. Why is the transistor called a current controlled device?
16. Define current amplification factor.
17. What are the requirements for biasing circuits?
18. When does a transistor act as a switch?
19. What is biasing?
20. What is stability factor?
21. Explain about the various regions in a transistor.
22. Explain about the characteristics of a transistor.
Part-B :
1. Explain the construction, operation, volt ampere characteristics, and application of SCR, also explain its two transistor model. (16)
2. Explain the construction, operation, equivalent circuit, volt ampere characteristics, and application of UJT. (16)
3. Explain the construction, operation, equivalent circuit, volt ampere characteristics, and application of DIAC. (16)
4. Explain the construction, operation, equivalent circuit, volt ampere characteristics, and application of TRIAC. (16)
5. Explain about CE configuration and its characteristics. (16)
6. Explain about CB configuration and its characteristics. (16)
7. Explain about CC configuration and its characteristics. (16)
8. Explain the construction, operation and volt ampere characteristics of FET. (16)
9. What are the types of feedback? Explain with neat sketch. (16)
Unit III
Digital Electronics :
Part-A(2Marks) :
1. Define binary logic.
2. Convert (634) 8 to binary.
3. Convert 0.640625 decimal number to its octal equivalent.
4. Convert 0.1289062 decimal number to its hex equivalent.
5. Subtract (0 1 0 1) 2 from (1 0 1 1) 2.
6. Add (1 0 1 0) 2 and (0 0 1 1) 2.
7. Using 10’s complement subtract 72532 – 3250.
8. Find 2’s complement of (1 0 1 0 0 0 1 1) 2.
9. Subtract (1 1 1 0 0 1) 2 from (1 0 1 0 1 1) 2 using 2’ s complement method.
10. What is meant by bit?
11. Define byte.
12. List the different number systems.
13. What are the different types of number complements?
14. Given the two binary numbers X = 1010100 and Y = 1000011, perform the subtraction (a) X -Y and (b) Y – X using 2’s complements.
15. Write the names of basic logical operators.
16. What are basic properties of Boolean algebra?
17. State the associative property of boolean algebra.
18. State the commutative property of Boolean algebra.
19. State the distributive property of Boolean algebra.
20. What are the classification of sequential circuits?
21. Define Flipflop.
22. What are the different types of flip-flop?
Part-B :
1. What is the operation of RS flip-flop? (16)
2. What is the operation of SR flip-flop? (16)
3. What is the operation of D flip-flop? (16)
4. What is the operation of JK flip-flop? (16)
5. What is the operation of T flip-flop? (16)
6. What are the different types of shift registers? Explain. (16)
7. Explain about counters. (16)
8. Construct and implement the half and full adders using logic gates. (16)
9. Explain the operation of A/D and D/A converters. (16)