കപ ~ ~~

FIFTH SEMESTER B.Sc. DEGREE EXAMINATION, NOVEMBER 2019

(CUCBCSS—UG)
Physics/Applied Physics

PHY 5B 09/APY 5B 10—ELECTRONICS (ANALOG AND DIGITAL)
Maximum : 80 Marks

Time : Three Hours
Section A (One Word)
Answer all questions.
Each question carries 1 mark.
1. What is current amplification factor ?
2. What is ripple factor ?
3. Explain voltage gain.
4. Find A+A-B =
5. Which is called universal gate ?
Write True or False :
6. The only function of NOT gate is to invert input signal
7. RC coupling is used for current amplification.
8. The best frequency response is of direct coupling.
9. Oscillators employ positive feedback.
10. The value of a of a transistor is less than one.
(10 x 1 = 10 marks)
Section B(Short Answer Type)
Answer all questions.
Each question carries 2 marks.
11. Draw the input and output characteristics of CB connection. What do you infer from these

12.

characteristics ?

Write a short note on operating point.