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Electronic Devices and Circuits

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

Holes
Holes and electrons
Ions
Electrons

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Electronic Devices and Circuits
Which one of the following is not a characteristic of a ferroelectric material?

High dielectric constant
No hysteresis
Electric dipole moment
Ferroelectric characteristic only above the curie point

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Electronic Devices and Circuits
The depletion layer width of Junction

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

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Electronic Devices and Circuits
The forbidden energy gap between the valence band and conduction band will be least in case of

Insulators
All of these
Metals
Semiconductors

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

PIN diode
Zener diode
Tunnel diode
Schottky diode

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Electronic Devices and Circuits
The most commonly used semiconductor material is

Germanium
Mixture of silicon and germanium
Silicon
None of these

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