What are the input and output resistance of a transistor in its CE mode?

Draw the typical input and output characteristics of an n-p-n transistor in CE configuration. Show how these characteristics can be used to determine (a) the input resistance ( r_(i)) and (b) current amplification factor (beta) .

ExpIain why the input resistance of a transistor is Iow whiIe the output resistance is high.

Draw the output characteristic curves of a n-p-n transistor in a C-E configuration and find the output resistance from it.

Draw typical output characteristics of an n-p-n transistor in CE configuration. Show how these characteristics can be used to determine output resistance.

In which region of the output characteristics is a transistor generally used ?

Draw the output characteristics of an n-p-n transistor in common emitter configuration for five base currents. What is an oscillator?

The input resistance of a siIicon transistor is 100 Omega . Base current is changed by 40 mu A which resuIts in a change in coIIector current by 2 mA. This transistor is used as a common emitter ampIifier with a Ioad resis- tance of 4 k Omega . What is the voItage of the ampIifier?

What is the change in resistance of a Voltemter if its range is increases by n times ?

What will be the change in the resistance of the Eureka wire,when its radius is halved and length is reduced to one-fourth of its original length?

Draw few output characteristics of a given p-n-p transistor in CE configuration from which beta can be obtained and explain how to determine it. (Take different I_(B) ).