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Electronic Devices and Circuits

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

10 eV
2 eV
0.78 eV
5 eV

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Electronic Devices and Circuits
In a half wave rectifier, the load current flows

For full cycle
Only for the negative half cycle of the input signal
For less than fourth cycle
Only for the positive half cycle of the input signal

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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
The depletion layer width of Junction

Decreases with light doping
Is independent of applied voltage
Increases with heavy doping
Is increased under reverse bias

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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.

True
False

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

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

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