Which of the following are true about capacitor filter? - Electronic Devices and Circuits

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

Which of the following are true about capacitor filter?

A)

It is electrolytic

B)

It is connected in parallel to load

C)

It helps in storing the magnetic energy

D)

It is also called as capacitor output filter

Correct Answer : Option (A) : It is electrolytic

Explanation : The rectifier may be full wave or half wave. The capacitors are usually electrolytic even though they are large in size.

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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)

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B)

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C)

gallium phosphide

D)

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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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