For CE transistor amplifier, the audio signal voltage across the collector resistance of $2\,k\Omega$ is $4\,V$. If the current amplification factor of the transistor is 100 and the base resistance is $1k\,\Omega$, then the input signal voltage is:

If the voltage gain of a common emitter amplifier is 5 and the current gain is 0.97, what is the power gain?

In a common emitter transistor amplifier ${\rm{\beta }} = 60,\;{R_0} = 5000{\rm{\Omega }}$ and internal resistance of a transistor is $500{\rm{\Omega }}$. The voltage amplification of amplifier will be

Mutual conductance of triode is $2{\rm{\;m}}{{\rm{\Omega }}^{ - 1}}$ and the amplification factor is 50. Its anode is connected with a source of 250 V and a resistance of $25{\rm{\;k\Omega }}$. The voltage gain of this amplifier is

Which of these is unipolar transistor

For transistor action, which statement is correct?

The input voltage to an amplifier is $V_i = 0.5\sin(50t)$. If the output voltage is $V_o = 75\sin(50t)$, what is the voltage gain of the amplifier?

In presence of interspace charge, at plate voltage of 200 V, the current is 80 mA. Then the current in mA at 400 V will be

The plate current ${i_p}$ in a triode valve is given ${i_p} = K{\left( {{V_p} + \mu {V_g}} \right)^{3/2}}$ where ${i_p}$ is in milliampere and ${V_p}$ and ${V_g}$ are in $volt$. If ${r_p} = {10^4}ohm,$ and ${g_m} = 5 imes {10^{ - 3}}mho$, then for ${i_p} = 8\,mA$ and ${V_p} = 300\,volt$, what is the value of $K$ and grid cut off voltage

Current gain of a transistor in common base mode is 0.95. Its value in common emitter mode is

If in a triode valve amplification factor is 20 and plate resistance is 10 k${\rm{\Omega }}$, then its mutual conductance is