Transistor

A transistor is 

• current controlled device

• voltage controlled device

• speed controlled device

• unipolar device

Transistor act as a switch

• Transistor act as a switch

• only when it is operated in cut off region

• only when it is operated in saturation region

• when it is operated in cut off as well as saturation region

The most commonly used transistor configuration is

• CE configuration

• CB configuration

• CC configuration

• CC configuration

In a pnp transistor, the current carriers are ………….

• holes

• 1. acceptor ions

• 1. donor ions

• free electrons

For certain transistor, if alpha is 0.6 then beta is 

• 0.37

• 0.6

• 1.5

• 6

A transistor has …………………

• 1. no pn junctions

• 1. three pn junctions

• 1. one pn junctions

• 1. two pn junctions

The emiiter of a transistor is

• lightly doped

• moderately doped

• heavily doped

• not doped

it is symbol of

• PNP Transistor

• NPN Transistor

• N channel JFET

• P channel JFET

FET is ............................ device

• voltage control

• current control

• power control

• energy control

In a transistor ………………..

• I_C = I_E + I_B

• I_B = I_C + I_E

• I_E = I_C – I_B

• I_E  = I_C + I_B