Electronic Devices Question 197

Question: The amplification factor of a triode valve is 15. If the grid voltage is changed by 0.3 volt the change in plate voltage in order to keep the plate current constant (in volt) is

[CPMT 1990]

Options:

A) 0.02

B) 0.002

C) 4.5

D) 5.0

Show Answer

Answer:

Correct Answer: C

Solution:

μ=ΔVpΔVg
ΔVp=μΔVg =15 x 0.3 = 4.5 volt.



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