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Un-Answered Questions { Electronics Communications }

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

1065


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

1142


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

1295


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

1096


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

1310


What is intrinsic semiconductor ?

1075


What is meant by led?

1037


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

1049


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

1247


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

1103


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

1111


Explain what is reverse saturation current?

1152


Why transistor is called current controlled device?

1263


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

1190


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

1147