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Electronic Devices and Circuits

Electronic Devices and Circuits
Power diodes are generally

Silicon diodes
Germanium diodes
None of these
Either of the above

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Electronic Devices and Circuits
Which of the following has highest resistivity?

Air
Mineral oil
Mica
Paraffin wax

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Electronic Devices and Circuits
Silicon is not suitable for fabrication of light emitting diodes because it is

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

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

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

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Electronic Devices and Circuits
The sensitivity of human eyes is maximum at

Red portion of spectrum
Green portion of spectrum
White portion of spectrum
Violet portion of spectrum

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Electronic Devices and Circuits
Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.

False
True

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