Electronic Devices Question 220
Question: Plate voltage of a triode is increased from 200 V to 225 V. To maintain the plate current, change in grid voltage from 5V to 5.75 V is needed. The amplification factor is
[RPET 2002]
Options:
A) 40
B) 45
C) 33.3
D) 25
Show Answer
Answer:
Correct Answer: C
Solution:
$ \mu ={{( \frac{\Delta V _{p}}{\Delta V _{g}} )} _{i _{p}=\text{constant}}}=\frac{(225-200)}{(5.75-5)}=33.3 $
