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Electronic Devices and Circuits

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

Zero or reverse bias
Reverse bias
Zero bias
Forward bias

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

10 eV
5 eV
2 eV
0.78 eV

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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
A hole can have at room temperature
None of these

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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
Silicon is not suitable for fabrication of light emitting diodes because it is

Narrowband gap semiconductor
Wideband gap semiconductor
An indirect band gap semiconductor
Direct band gap semiconductor

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Electronic Devices and Circuits
Power diodes are generally

Germanium diodes
Silicon diodes
Either of the above
None of these

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