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ALAGAPPA UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - OCTOBER – 2020
FIFTH SEMESTER SLOT – II
ANALOG ELECTRONICS 7BPH5C1
Total Marks: 25 Time: 1.0 Hrs
SECTION A - Short Answer - 5 x 2 = 10 Marks
Answer All The Questions
1. Draw a diagram of a typical DC load line. Note Saturation and Cut-Off Points on it.
2. Define input impedance of a CE amplifier.
3. Define bandwidth.
4. Mention the applications of direct coupled CE amplifier.
5. How a power amplifier differs from a small signal amplifier.
SECTION B - Descriptive Type - 3 x 5 = 15 Marks
Answer Any Three Questions
6. Discuss the fixed base bias method of biasing a transistor.
7. Explain the AC load line analysis of an amplifier in CE mode.
8. Describe the construction and working of a transformer coupled amplifier. List its' advantage,disadvantages and applications.
9. Explain the operation of push-pull amplifier with neat circuit diagram.
10. Explain the construction and working of Hartley oscillator.