March 9, 2010


Forth semester
Electronics and Instrumentation Engineering
Question Papers

(Common to Instrumentation and Control Engineering )
(Regulation -2004)
PART-A (10*2=20)
1. What is meant by monolithic integrated circuits?
2. What is photolithography?
3. Define CMMR. For a practical op amp CMMR should be _____
4. Draw an op amp circuit. Write the equation for its output voltage.
5. Define sampling time and holding time.
6. Write the advantages of Flash type ADC.
7. Draw the pin diagram of 555IC.
8. Mention any four application of phase locked loop.
9. What are the types of voltage regulators?
10. What is an opto coupler? Write its application.
PART-B (5*16=80)
11.(a) (i) describe in details the classification of ICs.(8)
(ii) Explain the process of masking and etching in the IC fabrication with neat sketches.(8)
(b)(I) explain how monolithic IC is different from Hybrid IC.(8)
(ii) Give an account on IC packaging. (8)
12.(a) (i) explain in detail the characteristic of an ideal opamp. (8)
(ii) Draw the block diagram and equivalent circuit of op-amp.
Explain them. (10)
(b) (i) Explain the application of op amp as (1)summer (2)integrator. (8)
(ii) Define and explain (1) slew rate (2) SVRR. (4)
(iii) Explain the frequency response of op-amp. (4)
13(a)(i)draw an instrumentation amplifier using op amp and explain. (6)
(ii) Explain the following op amp circuits.
(1) Peak detector
(2) Clamper. (10)
(b)(i)draw a neat R-2R ladder DAC and explain its principle.(6)
(ii) draw a flash type ADC and explain its working.(10)
14.(a)(i) describe in details the characteristics and applications of 555 timer. (6)
(ii) Draw a neat block diagram of VCO and explain. (10)
(b)(i) Draw the 565 PLL and explain it’s functioning in detail. (8)
(ii) Give an account on “Analog multiplier IC”. (8)
15.(a)(i) explain the principle of operation of switching regulator with a neat sketch.(8)
(ii) Draw a block diagram of an IC voltage regulator and explain its working. (8)
(b) Write short notes on the following:
(i) Opto electronic ICs. (8)
(ii) Isolation amplifier. (8)



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