Name of the University : Alagappa University
Degree : B.Sc
Department : Electronics
Subject Code/Name : Circuits And Networks Analysis And Synthesis
Semester : I
Document Type : Model Question Papers
Website : alagappauniversity.ac.in
Download Model/Sample Question Paper : NOV 2010 : https://www.pdfquestion.in/uploads/alagappauniversity.ac.in/3979.-B.Sc.ELECTRONICS%20CBCS.pdf
Circuits & Networks Analysis :
Time : 3 Hours
Maximum : 75 Marks
Part – A :
Related : Alagappa University SemiConductor Devices B.Sc Model Question Papers : www.pdfquestion.in/4014.html
Answer all questions. :
1. What is power in watts if energy equal to 60J is used is 3 sec –
2. State Kirchhoff’s current laws.
3. What is transient state and transient time-
4. Calculate the energy stored in an inductor when current passes through it.
5. Write down the sine wave equation.
6. Define frequency response and Q-Factor
7. What is passive and active ports?
8. What are Decibel and Neper?
9. Find the Laplace transform of : eat sin bt.
10. State initial and final value theorem.
Part – B : (5 × 5 = 25)
Answer all questions.
11 a. State Kirchhoff’s voltage law. Explain it with neat diagram.
(Or)
b. Define Thevenin’s theorem. Explain it.
12 a. Explain the DC response of RC circuit with relevant diagram.
(Or)
b. Obtain the expression of sinusoidal response of RC circuit.
13 a. Explain the phase and angular relation of a sine wave.
(Or)
b. Illustrate the basic terms related to voltage and current value of sine wave.
14 a. Explain T-type Attenuator.
(Or)
b. What are impedance parameter and explain it.
15 a. Write down the properties of Laplace transforms.
(Or)
b. Obtain the Laplace transformation of t3.
Part – C : (3 × 10 = 30)
Answer any three questions.
16. Describe the star delta transformation with necessary circuit diagram.
17. Discuss the DC response of RL circuit and find the time constant, power in the resistor and inductor.
18. Discuss the phase relation in a pure inductor. Calculate the r.m.s. current in the circuit.
19. Explain the K-low-pass filter and obtain the expression to find the characteristic impedance.
20. If F(s) = 2 / (s+1) (s+5), find the function of F(t).
B.Sc. Degree Examination November 2010 :
Electronic Devices And Circuits :
(CBCS—2008 onwards)
Time : 3 Hours
Maximum : 75 Marks
Part – A (10 × 2 = 20)
Answer all questions.
1. What is an extrinsic semiconductor? Give example.
2. What is meant by Zener Breakdown?
3. What is transistor biasing?
4. Define of a transistor?
5. Give the basic classification of amplifier.
6. In a transistor coupled class-A amplifier VCE(max) = 27 V and VCE (Min) = 3 V. Compute its overall efficiency.
7. What is an oscillator? Give any two advantages.
8. Write down the expression for the frequency of a wien bridge oscillator.
9. Draw the configuration of MOSFET.
10. Write a note on ohmic region in a JFET characteristics.
Part – B : (5 × 5 = 25)
Answer all questions.
11 a. What are drift current and diffusion current in semiconductor? Explain.
(Or)
b. Explain the breakdown voltage in Zener diode.
12 a. Explain why base width of a transistor is extremely small.
(Or)
b. Explain the h-parameters of a transistor.
13 a. Explain the working of emitter follower?
(Or)
b. Draw the circuit of a transformer coupled transistor amplifier and explain its action.
14 a. Describe the action of Collpits oscillator?
(Or)
b. Describe the action of bistable multivibrator?
15 a. Mention the characteristics of depletion MOSFET?
(Or)
b. How will you determine the drain characteristics of FET.
Part – C : (3 × 10 = 30)
Answer any three questions.
16. Explain the function of full wave rectifier? Obtain its efficiency.
17. Describe the method of obtaining the input, output and mutual characteristics of a transistor in the common emitter configuration. Indicate how to determine the input impedance, the output impedance and current amplification factor of the transistor.
18. Describe how a transistor can be operated as a amplifier. Also explain the action of Class-B amplifier.
19. Describe the action of a Hartley oscillator. Obtain the expression for the oscillating frequency.
20. Explain how MOSFET’s are used as resistances and capacitance.
B.Sc. Degree Examination November 2010 :
Digital Electronics And Logic Design :
(CBCS—2008 onwards)
Time : 3 Hours
Maximum : 75 Marks
Part – A (10 × 2 = 20)
Answer all the questions.
1. How are Binary and Hexadecimal Numbers related?
2. Define : Quad.
3. How does an encoder differ from a decoder?
4. Write the major applications of Multiplexer.
5. List out the any four, basic flip-flop’s applications.
6. How is conversion Accuracy determined?
7. What is meant by logic family?
8. List out the MOS Families.
9. What are Magnetic Memories?
10. How are memory cells organised?
Part – B : (5 × 5 = 25)
Answer all questions.
11 a. Convert the following numbers to Binary numbers.
i) 1578
ii) 4A.6716
(Or)
b. State the laws of Boolean Algebra.
12 a. Explain how, the decoders are designed?
(Or)
b. Construct full adder circuit and explain its functioning.
13 a. Write a short note on ‘‘Binary Counters.’’
(Or)
b. Draw R-2R ladder Network.
14 a. Write a short note on “Differential Amplifier”.
(Or)
b. What is the principal reason, why ECL logic is faster than TTL?
15 a. Describe the function of optical memory.
(Or)
b. How does a magnetic core memory share data?