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Electronic Devices and Circuits

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

Zero or forward bias
Zero bias
Reverse bias
Forward bias

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Electronic Devices and Circuits
Which variety of copper has the best conductivity?

Pure annealed copper
Induction hardened copper
Copper containing traces of silicon
Hard drawn copper

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Electronic Devices and Circuits
An electron in the conduction band

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

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Electronic Devices and Circuits
Fermi level is the amount of energy in which

An electron can have at room temperature
Must be given to an electron move to conduction band
None of these
A hole can have at room temperature

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Electronic Devices and Circuits
If too large current passes through the diode

Excessive heat may damage the diode
All holes will freeze
All electrons will leave
Diode will emit light

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Electronic Devices and Circuits
In a semiconductor diode, the barrier offers opposition to

Majority as well as minority carriers in both regions
Majority carriers in both regions
Holes in P-region only
Free electrons in N-region only

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