Analog Electronics

1.The Emitter of transistor is doped the heaviest, Why..?
A- It has to supply the Charged Carriers


2.Emitter Region - High Resistivity Highly Doped , True or False ?
A- True


3.Impurity used for realizing BASE of N-P-N transistor?
A- Boron


4.For NPN - BJT, main stream of current in the base region is?
A- Diffusion of Electrons.


5.In a N-P-N transistor in the saturation region ?
A-Vcb is -ve and Vbe is +ve


6. Two P-N junction diodes are placed back to back to form a transistor, what will be the effect ?
A- This cannot be used as the transistor due to the larger base width.


7. Alpha and Beta of a transistor are related as
A- (alpha)= (beta)/(beta + 1)


8. Vbe(sat) for Germanium and Silicon PNP transistor is of  the order ?
A- -.3 Voltsand -.7 Volts


9. Icbo is reduced by reducing ?
A- Temperature


10. In a BJT what is the relation between forward and inverted mode current gain?
A- G forward >> G backward