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  • In the circuit of a triode value, there is no change in the plate current, when the plate potential is increased from <img alt="\mathrm{200 V \: to\: 220 V}" src="https://entrancecorner.oncodecogs.

In the circuit of a triode value, there is no change in the plate current, when the plate potential is increased from \mathrm{200 V \: to\: 220 V} and the grid potential is decreased from \mathrm{-0.5 V \: to\: -1.3 V}. The amplification factor of the valve is
 

Option: 1

15


Option: 2

20


Option: 3

25


Option: 4

35


Answers (1)

\mathrm{ \mu=\left(\frac{\Delta V_p}{\Delta V_{\mathrm{g}}}\right) \Delta I_p \text { is constant } }

\mathrm{=\frac{220-200}{-0.5-(-1.3)}=\frac{20}{0.8}=25}

Hence option 3 is correct.

 

Posted by

Ramraj Saini

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