Electronic Devices Question 192
Question: The amplification factor of a triode is 20. If the grid potential is reduced by 0.2 volt then to keep the plate current constant its plate voltage is to be increased by
[RPMT 1993, 95]
Options:
A) 10 volt
B) 4 volt
C) 40 volt
D) 100 volt
Show Answer
Answer:
Correct Answer: B
Solution:
$ \mu =-\frac{\Delta V _{p}}{\Delta V _{G}} $
$ \Rightarrow \Delta V _{p}=-\mu \Delta V _{G}=-20\times (-0.2) $ = 4V.
