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Electronic Devices and Circuits

Electronic Devices and Circuits
In a bipolar transistor, the emitter base junction has

Forward bias
Zero or reverse bias
Reverse bias
Zero bias

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Electronic Devices and Circuits
Which one of the following is not a characteristic of a ferroelectric material?

Ferroelectric characteristic only above the curie point
No hysteresis
High dielectric constant
Electric dipole moment

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

False
True

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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 holes
Diffusion of electrons
Drift of electrons
Drift of holes

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Electronic Devices and Circuits
An electron in the conduction band

Has lower energy than the electron in the valence band
Has higher energy than the electron in the valence band
Jumps to the top of the crystal
Loses its charge easily

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Electronic Devices and Circuits
The forbidden energy gap between the valence band and conduction band will be least in case of

All of these
Metals
Insulators
Semiconductors

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