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ELECTRONIC DEVICES AND CIRCUITS

Electronic Devices and Circuits
Permalloy is

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

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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
Electric dipole moment
High dielectric constant

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

Tunnel diode
PIN diode
Zener diode
Schottky 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

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

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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
None of these
A hole can have at room temperature
An electron can have at room temperature

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