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Electronic Devices and Circuits

Electronic Devices and Circuits
Power diodes are generally

None of these
Germanium diodes
Either of the above
Silicon diodes

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Electronic Devices and Circuits
For a NPN bipolar transistor, what is the main stream of current in the base region?

Drift of holes
Diffusion of holes
Diffusion of electrons
Drift of electrons

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Electronic Devices and Circuits
The amount of photoelectric emission current depends on

Both frequency and intensity of incident radiation
Intensity of incident radiation
Frequency of incident radiation
None of these

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Electronic Devices and Circuits
For a P-N diode, the number of minority carriers crossing the junction depends on

Potential barrier
None of these
Forward bias voltage
Rate of thermal generation of electron hole pairs

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Electronic Devices and Circuits
When avalanche breakdown occurs covalent bonds are not affected.

True
False

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Electronic Devices and Circuits
How many free electrons does a p type semiconductor has?

Those produced by doping as well as thermal energy
Any of the above
Only those produced by thermal energy
Only those produced by doping

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