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Electronic Devices and Circuits

Electronic Devices and Circuits
Power diodes are generally

Silicon diodes
Either of the above
Germanium diodes
None of these

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Electronic Devices and Circuits
The amount of photoelectric emission current depends on

None of these
Frequency of incident radiation
Both frequency and intensity of incident radiation
Intensity of incident radiation

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Electronic Devices and Circuits
For a NPN bipolar transistor, what is the main stream of current in the base region?

Drift of electrons
Drift of holes
Diffusion of holes
Diffusion of electrons

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

Electrons
Holes
Ions
Holes and electrons

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Electronic Devices and Circuits
In a semiconductor diode, the barrier offers opposition to

Majority carriers in both regions
Free electrons in N-region only
Majority as well as minority carriers in both regions
Holes in P-region only

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Electronic Devices and Circuits
Permalloy is

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

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