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Electronic Devices and Circuits

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

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

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Electronic Devices and Circuits
Free electrons exist in

First band
Conduction band
Third band
Second band

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

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

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Electronic Devices and Circuits
Permalloy is

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

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

Mica
Paraffin wax
Air
Mineral oil

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