Electrical Engineering MCQs

Page No. 89

A Zener voltage regulator will cease to act as a voltage regulator if Zener current becomes______________?


aLess than load current

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bZero

✓


cMore than load current

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dNone of the above

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View Answer Zero

Another name for Zener diode is ______________diode?


aBreakdown

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bVoltage

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cPower

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d Current

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View Answer Breakdown

For increasing the voltage rating, zeners are connected in_____________?


a Parallel

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bSeries-parallel

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cSeries

✓


d None of the above

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View Answer Series

In a Zener voltage regulator, the changes in load current produce changes in _________________?


aZener current

✓


bZener voltage

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cZener voltage as well as Zener current

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dNone of the above

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View Answer Zener current

If the doping level is increased, the breakdown voltage of the Zener_______________?


aRemains the same

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bIs increased

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cIs decreased

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dNone of the above

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View Answer Is decreased

Zener diode are generally made of _____________?


aGermanium

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bSilicon

✓


cCarbon

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d None of the above

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View Answer Silicon

As the junction temperature increases, the voltage breakdown point for avalanche mechanism______________?


aRemains the same

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bDecrease

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c Increases

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dNone of the above

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View Answer Increases

A Zener diode is used as a _____________voltage regulating device?


aShunt

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bSeries

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cSeries-shunt

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d None of the above

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View Answer Shunt

In a 15 V Zener diode , the breakdown mechanism will occur by ______________?


aAvalanche mechanism

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bZener mechanism

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cBoth Zener and avalanche mechanism

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dNone of the above

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View Answer Avalanche mechanism

As the junction temperature increases, the voltage breakdown point for Zener mechanism _______________?


aIs increased

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bIs decreased

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cRemains the same

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dNone of the above

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View Answer Is decreased

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