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ELECTRONIC DEVICES AND CIRCUITS

Electronic Devices and Circuits
Permalloy is

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

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

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

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

PIN diode
Schottky diode
Tunnel diode
Zener diode

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Electronic Devices and Circuits
Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is

Antiparallel to magnetic field
In arbitrary direction
In the direction of current
Normal to both current and magnetic field

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Electronic Devices and Circuits
Fermi level is the amount of energy in which

Must be given to an electron move to conduction band
An electron can have at room temperature
None of these
A hole can have at room temperature

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