what is knee voltage in a junction Diode?

1

(a)

About 0.3V germanium .About 0.67V for silicon

In transistor a current controlled (or)temperature controlled device?.

1

(a)

Transistor is a current controlled devices

In a given diagram ,is the diode reverse (or) forward biased?

1

(a)

Reverse biased

Which gate is represented by the following diagram?

1

(a)

NAND GATE

The ratio of number of free electrons to holes ne/nh for two different materials A and B are 1 and <1 respectively. Name the type of semi conductor to which A and B belongs.

1

(a)

If n_e/n_{h =1} . Hence A is intrinsic semi conductor.
If n_e/n_h <1 , n_e < n_h hence B is P-type