An oscillator is nothing but an amplifier with

Input signal to a common emitter amplifier having a voltage gain of $1000$ is given by $v_i = (0.004 \, V) \sin(\omega t + \pi/2)$. The corresponding output signal is

$A$ transistor is operated in common emitter configuration at a constant collector voltage $V_C = 1.5 \, V$ such that a change in the base current from $100 \, \mu A$ to $150 \, \mu A$ produces a change in the collector current from $5 \, mA$ to $10 \, mA$. The current gain $\beta$ is:

For a common emitter transistor,if $\frac{I_{C}}{I_{E}}=0.95$,then the current gain is

Which of these is a unipolar transistor?

In a transistor,the collector current is always less than the emitter current because: