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

All of these
Insulators
Metals
Semiconductors

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Electronic Devices and Circuits
Piezoelectric quartz crystal resonators find application where

Modulation of signal is required
Rectification of the signal is required
Signal amplification is required
Signal frequency control is required

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Electronic Devices and Circuits
At room temperature the current in an intrinsic semiconductor is due to

Ions
Holes and electrons
Holes
Electrons

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Electronic Devices and Circuits
An electron in the conduction band

Has higher energy than the electron in the valence band
Has lower 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
How many free electrons does a p type semiconductor has?

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

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