An oscillator is nothing but an amplifier with

In a transistor,the forward bias is always kept smaller than the reverse bias. The correct reason is:

According to a graph drawn between the input and output voltages of a transistor connected in common emitter configuration, the region in which the transistor acts as a switch is

$A$ transistor is connected in common emitter configuration. The collector supply is $8 V$ and the voltage drop across a resistor of $800 \Omega$ in the collector circuit is $0.5 V$. If the current gain factor $\alpha$ is $0.96$,the base current is

For a transistor to be used as an amplifier,which of the following conditions must be satisfied?

Three amplifiers,each having a voltage gain of $10$,are connected in series. The resultant gain would be