KERALA UNIVERSITY Class 3 electronics devices and circuits Question Paper 2021

Practice authentic previous year questions for better exam preparation.

Sample Questions

(a) Explain the working of a class B pushpull amplifier 10
(a) Describe a differentiator using RC circuit. Give waveforms and obtain the oulput equalion.
(b) Explain the working of a astable multivibator using 555 lC with neat waveforms.
Describe channel lenglh modulation? $$ (10 \times 2=20 \text { Marks }) $$ Answer any one full queslions frem each Module. Each queslicn canies 20 marks.
(b) Describe CE-CE cascade amplifier, What is the effect of cascading on amplifter bandwidth?