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ALAGAPPA
UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020
THIRD
SEMESTER SLOT – III
ANALOG ELECTRONICS 7BPH5C1
Total Marks: 25 Time: 1.0 Hr
SECTION A – SHORT ANSWER - 5 x 2 = 10 Marks
ANSWER ALL THE QUESTIONS
1. State
Barkhausen criterion.
2. What is
positive feedback?
3. State any
two applications of op-amp.
4. Define CMRR.
5. Define input
impedance of an op-amp.
SECTION B - DESCRIPTIVE - 3 x 5 = 15 Marks
ANSWER ANY THREE
6. Explain the
working of Colpitt oscillator.
7. With neat
diagram explain the principle and working of RC phase shift oscillator.
8. List the
characteristics of an ideal op-amp.
9. Explain the
working of an op-amp differentiator with appropriate diagrams.
10. Explain the
working of an op-amp integrator with appropriate diagrams.