SRM University 2007 B.Tech Information Technology ELECTRONIC DEVICES AND CIRCUITS - Question Paper

7. Why FET opamps are better than BJT opamps?
8. Explain why opamp is given with negative feedback in most of the circuits.
9. How is gain stabilized by negative feedback?
10. List the advantages of opamp.
11. List any four properties of an ideal opamp
12. List any four properties of a practical opamp
13. Explain what is meant by compensated opamp.
14. Mention the different stages in an opamp.
15. Why differential amplifier is used as an input stage in op-amp?
16. Explain why opamp has high input impedance and low output impedance.
17. Explain what do you mean by input offset voltage
18. Why open loop op-amp configuration is not used in linear application?
19. If an opamp is provided a differential input of 15mv whose open loop gain is 106 what is its output?
20. Explain why ideal opamp’s output offset voltage is zero and practical opamp’s output offset voltage is always non-zero.
21. Sketch the circuit of an opamp based voltage follower.
22. Explain the use of voltage-follower circuit?
23. Draw the schematic of an opamp based buffer amplifier.
24. Draw the circuit diagram of an opamp based inverter.
25. Sketch the circuit of an opamp based inverting amplifier
26. Sketch the circuit of an opamp based non-inverting amplifier
27. Compare inverting and non-inverting amplifiers?
28. Draw the circuit of a non-inverting opamp amplifier with a gain of one.
29. Draw the op –amp circuit as an adder with 2 inputs?
30. Give the schematic of an op-amp based non-inverting summer?
31. Sketch the circuit of an opamp based difference amplifier
32. How can op-amp be configured to perform voltage-current conversion with floating load?
33. Draw the circuit diagram of an opamp based V to I converter with grounded load.
34. Give the schematic of an op-amp differentiator?
35. Give the schematic of an op-amp integrator?
36. Write out the output expression for an opamp based integrator circuit. ?
37. Write out the output expression for an opamp based differentiator circuit. ?
38. If an input signal of 10sinwt is applied to the input of an opamp based inverter circuit what is its output?
39. Explain why opamp based differentiator circuit is designed with a capacitor and not with an inductor.
40. Why integrators are preferred over differentiators in analog computers?
41. What are the main drawbacks of ideal differentiator?
42. What are the main drawbacks of ideal integrator?
43. Draw the schematic of an opamp based practical differentiator.
44. Draw the schematic of an opamp based practical integrator.

Earning:   Approval pending.