Question

what is knee voltage

Answer 1

heya!! 
knee voltage is the voltage above which the current varies linearly with the potential difference..................................in the graph of forward biasing 
i hope it helps u sis..

Answer 2

Answer:

At room temperature, a potential difference equal to the barrier potential is required before a reasonable forward current starts flowing across the diode. This voltage is known as threshold voltage or cut-in voltage or knee voltage.