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Electronic Devices and Circuits

Electronic Devices and Circuits
Free electrons exist in

Conduction band
First band
Third band
Second band

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Electronic Devices and Circuits
At room temperature the current in an intrinsic semiconductor is due to

Electrons
Holes and electrons
Ions
Holes

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Electronic Devices and Circuits
Permalloy is

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

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Electronic Devices and Circuits
In which of these is reverse recovery time nearly zero?

Zener diode
Schottky diode
PIN diode
Tunnel diode

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

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

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Electronic Devices and Circuits
As compared to bipolar junction transistor, a FET

Has better thermal stability
Has higher input resistance
All of these
Is less noisy

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