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Electronic Devices and Circuits

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

2 eV
5 eV
10 eV
0.78 eV

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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
For a P-N diode, the number of minority carriers crossing the junction depends on

Rate of thermal generation of electron hole pairs
Potential barrier
None of these
Forward bias voltage

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Electronic Devices and Circuits
Permalloy is

A conon-ferrous alloy used in aircraft industry
A polymer
A nickel an iron alloy having high permeability
A variety of stainless steel

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Electronic Devices and Circuits
Free electrons exist in

Second band
First band
Third band
Conduction band

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Electronic Devices and Circuits
How many free electrons does a p type semiconductor has?

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

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