The grid voltage of any triode valve is chang | vedclass

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

Question

(B) The mutual conductance $(g_m)$ of a triode valve is defined as the ratio of the change in plate current $(\Delta i_p)$ to the change in grid volta

Vedclass · Accepted Answer

$0.6$

Vedclass · Answer

(B) The mutual conductance $(g_m)$ of a triode valve is defined as the ratio of the change in plate current $(\Delta i_p)$ to the change in grid voltage $(\Delta v_g)$ at a constant plate voltage.Formula: $g_m = \frac{\Delta i_p}{\Delta v_g}$Given:$g_m = 3 	imes 10^{-4} \, 	ext{mho}$$\Delta v_g = |(-3) - (-1)| = |-2| = 2 \, V$Substituting the values:$3 	imes 10^{-4} = \frac{\Delta i_p}{2}$$\Delta i_p = 3 	imes 10^{-4} 	imes 2 = 6 	imes 10^{-4} \, A$Converting to milliamperes $(mA)$:$\Delta i_p = 6 	imes 10^{-4} 	imes 10^3 \, mA = 0.6 \, mA$Therefore, the change in plate circuit current is $0.6 \, mA$.

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 ..... $mA$.

Similar Questions

In a diode valve,the cathode temperature must be ($\phi$ = work function):

The correct relation for a triode is:

$A$ change of $0.8 \,mA$ in the anode current of a triode occurs when the anode potential is changed by $10 \,V$. If $\mu = 8$ for the triode,then what change in the grid voltage would be required to produce a change of $4 \,mA$ in the anode current?

For a triode,$\mu = 64$ and $g_m = 1600 \, \mu \text{mho}$. It is used as an amplifier and an input signal of $1 \, V \text{ (rms)}$ is applied. The signal power in the load of $40 \, k\Omega$ will be......$mW$.

Write the differences between vacuum tube (valve) electronic devices and semiconductor electronic devices.

Vedclass Test Series

Exam Paper Generator

Online Exam Module