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Viva questions for practical electronics

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ricoseeds

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Suggest some typical viva questions for digital electronics and the 74XX and 78XX series,op amp, transister,diodes!!
 

what is the input and output impedance of an ideal opamp?
How can you use an opamp as buffer?
which transistor configuration is used for power amplication? How power amplification occurs in such a configuration?
 

What is propogation delay of a 74xx TTL gate?
What is dropout voltage of a 78xx regulator?
What is slew rate of an opamp?
What is miller effect in a transistor?
What is reverse recovery time of a diode?
 

how much voltage margin is required for input voltage given to 7812 or 7805 ?
 

One opamp phenomenon I only recently discovered was opamp oscillation. Two very important that could be made from opamps are:

A] Can all opamps be used as voltage followers? If not, then why not?
B] What is opamp oscillation and how can it be eliminated?
 

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