In a transistor emitter is always forward biased. Why?

State the relation between transistor parameters alpha and beta .

Every real number is always rational

In a transistor, the base current is changed by 20muA . This results in a change of 0.02V in base emitter voltage and a change of 2mA in the collector current. .If the transistor is used as an amplifier with load resistance of 5KΩ .Find its voltage gain.

Clear, transparent water is always fit for drinking.' Comment.

Is it possible to place a satellite, so that it is always over New Delhi? Why?

If the base region of a transistor is made large as compared to the usual transistor ,how does it affect current gain of the transistor?

What is transistor?How it works?

In a transistor the value of alpha=.09 . What is the value of beta ?