The amplification factor of a triode is 50. I | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The amplification factor $\mu$ of a triode is defined as the ratio of the change in plate potential to the change in grid potential for a constant

Vedclass · Accepted Answer

$10$

Vedclass · Answer

(B) The amplification factor $\mu$ of a triode is defined as the ratio of the change in plate potential to the change in grid potential for a constant plate current,with a negative sign indicating that the potentials must change in opposite directions to maintain the same current.$\mu = - \frac{\Delta V_p}{\Delta V_g}$Given: $\mu = 50$ and $\Delta V_g = -0.20\, V$.To keep the plate current unchanged,we need to find the required increase in plate potential $\Delta V_p$.$\Delta V_p = - \mu 	imes \Delta V_g$$\Delta V_p = -50 	imes (-0.20\, V) = 10\, V$.Therefore,an increase of $10\, V$ in plate potential is required.

The amplification factor of a triode is $50$. If the grid potential is decreased by $0.20\, V$,what increase in plate potential will keep the plate current unchanged?

Similar Questions

For a triode, ${r_p} = 10 \text{ k}\Omega$ and ${g_m} = 3 \text{ m}\mho$. If the load resistance is double the plate resistance, then the value of the voltage gain will be:

In the space charge limited region,the plate current in a diode is $10\, mA$ for a plate voltage of $150\, V$. If the plate voltage is increased to $600\, V$,then the plate current will be.......$mA$.

The grid voltage of any triode valve is changed from $-1 \, V$ to $-3 \, V$ and the mutual conductance is $3 \times 10^{-4} \, \text{mho}$. The change in plate circuit current will be ..... $mA$.

The introduction of a grid in a triode valve affects plate current by

The mutual characteristic of a triode is represented by which of the following graphs?

Vedclass Test Series

Exam Paper Generator

Online Exam Module