ELECTRONIC DEVICES AND CIRCUITS QUIZ

Assertion (A): A VMOS can handle much larger current than other field effect transistors.Reason (R): In a VMOS the conducting channel is very narrow.

A is true but R is false

Both A and R are true but R is not a correct explanation of A

Both A and R are true and R is correct explanation of A

A is false but R is true

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Which variety of copper has the best conductivity?

Induction hardened copper

Copper containing traces of silicon

Pure annealed copper

Hard drawn copper

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In which of these is reverse recovery time nearly zero?

Zener diode

Tunnel diode

PIN diode

Schottky diode

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When avalanche breakdown occurs covalent bonds are not affected.

False

True

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In a bipolar transistor, the emitter base junction has

Reverse bias

Zero bias

Forward bias

Zero or reverse bias

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The sensitivity of human eyes is maximum at

Green portion of spectrum

Red portion of spectrum

White portion of spectrum

Violet portion of spectrum

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Which of the following has highest resistivity?

Mineral oil

Mica

Air

Paraffin wax

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

Ferroelectric characteristic only above the curie point

Electric dipole moment

No hysteresis

High dielectric constant

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Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.

True

False

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In monolithic ICs, all the components are fabricated by

Diffusion process

Oxidation

Evaporation

None

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