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

Electronics and Communication Engineering (ECE) : Electronic Devices and Circuits - Quiz(MCQ)

Which one of the following is not a characteristic of a ferroelectric material?

A)

No hysteresis

B)

Electric dipole moment

C)

Ferroelectric characteristic only above the curie point

D)

High dielectric constant

Correct Answer : Option (C) : Ferroelectric characteristic only above the curie point

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The kinetic energy of photoelectrons emitted by a photo sensitive surface depends on

A)

angle of incidence of radiation

B)

surface conditions of the surface

C)

intensity of the incident radiation

D)

wavelength of the incident radiation

Correct Answer : wavelength of the incident radiation

For radiating ultraviolet rays, LEDs use

A)

gallium arsenide

B)

zinc sulphide

C)

gallium phosphide

D)

None of the above

Correct Answer : zinc sulphide

For an P-N-P transistor in normal operation its junction are biased as

A)

emitter base : reverse, collector base : reverse

B)

emitter base : reverse, collector base : forward

C)

emitter base : forward, collector base : forward

D)

emitter base : forward, collector base : reverse

Correct Answer : emitter base : forward, collector base : reverse

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