Prac

It's not biased correctly. A normal Si transistor starts conducting after around 700mV. A typical input signal will not even reach this threshold. Moreover since your input constantly shifts between positive and negative the transistor will only be conducting for very small portions of the wave. This might be okay for some radio purposes but with audio applications we need the output to fully duplicate the form of the input. So we must bring the base prefixed voltage at a point where the whole wave will affect the conductivity of thw transistor. This is called a bias. That's how you do it. Add a resistor voltage divider connecting the middle to the base. The upper resistor should be 190Kohm the lower one should be 1Mohm. Now you can see that the output voltage is somewhere around 2.5V (1/2 of 5V). Also decrease the input amplitude from 5V to 1-2mV.

Thx body for reply .but i am giving the supply of 5volt ac still at base transistor is not in on position