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Electronic Devices and Circuits

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

True
False

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

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

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Electronic Devices and Circuits
Power diodes are generally

None of these
Silicon diodes
Germanium diodes
Either of the above

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

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

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Electronic Devices and Circuits
In a half wave rectifier, the load current flows

For less than fourth cycle
Only for the positive half cycle of the input signal
For full cycle
Only for the negative half cycle of the input signal

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Electronic Devices and Circuits
Forbidden energy gap in germanium at 0 K is about

0.78 eV
10 eV
2 eV
5 eV

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