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

• A. 0.02
• B. 0.002
• C. 4.5
• D. 5.0

Answer 1

Answer: (C)

4.5

Answer 2

$\mu = \frac{\Delta V_{p}}{\Delta V_{g}} \Rightarrow \Delta V_{p} = \mu\Delta V_{g}$ =15 × 0.3 = 4.5 volt.