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Un-Answered Questions { Electronics Communications }

Define dynamic resistance of a p-n junction diode in forward biased condition.

1113


Define what is the effect of removal of bypass capacitor in a ce amplifier circuit?

1205


Define what is the main factor for controlling the thermal generation and recombination?

1359


What are ‘emitter injection efficiently’ and ‘base transport factor’ and how do they influence the transistor operation?

1156


In which bands do the movement of electrons and holes take place?

1392


What is intrinsic semiconductor ?

1135


What is meant by led?

1101


Define what is meant by voltage regulation of a dc power supply?

1128


Why silicon type transistors are more often used than germanium type?

1292


Why common-collector circuit is known as an emitter follower?

1147


Define what happens to the conductivity of semiconductor with the rise in temperature? Compare with the conductivity of metals.

1153


Explain what is reverse saturation current?

1196


Why transistor is called current controlled device?

1328


What is the ratio of majority and minority carriers in intrinsic and extrinsic semiconductors?

1269


Define cut-in voltage of a p-n junction diode?

1202