Question $1$

$($a$)$ Briefly discuss

i$.$ the various parts of the transistor $[5]$

ii$.$ Why an ordinary junction transistor is called bipolar?

$[5]$

iii. the state of a transistor when the deplation region is ON or OF in NPN

$[5]$

iv$.$ why silicon type transistors are more often used than germanium type?

$[5]$

v$.$ the NPN and PNP transistor

$[10]$

$($b$)$ State and briefly discuss the applications of the following theorems

$[5]$

i$.$ Thevenin's theorem

$[5]$

ii$.$ Norton's theorem

$($c$)$ Determine the Thevenin and Norton equivalents of the circuit below, with the port as shown in figure br $\text{'}$

$|15]$