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MCQs 1: In a 15 V Zener diode , the breakdown mechanism will occur by ______________?

Avalanche mechanism Zener mechanism Both Zener and avalanche mechanism None of the above
Answer Explanation

MCQs 2: As the junction temperature increases, the voltage breakdown point for Zener mechanism _______________?

Is increased Is decreased Remains the same None of the above
Answer Explanation

MCQs 3: A Zener diode utilises_____________characteristic for voltage regulation?

Forward Reverse Both forward and reverse None of the above
Answer Explanation

MCQs 4: In an unregulated power supply, if input a.c. voltage increases, the output voltage _______________?

Increases Decreases Remains the same None of the above
Answer Explanation

MCQs 5: In an unregulated power supply, if load current increases, the output voltage _____________?

Remains the same Decreases Increases None of the above
Answer Explanation

MCQs 6: Commercial power supplies have voltage regulation ______________?

of 10% of 15% of 25% within 1%
Answer Explanation

MCQs 7: A power supply which has voltage regulation of ____________ is unregulated power supply?

0 % 5 % 10 % 8%
Answer Explanation

MCQs 8: An ideal regulated power supply is one which has voltage regulation of________________?

0% 5% 10% 1%
Answer Explanation

MCQs 9: The rupture of co-valent bonds will occur when the electric field is__________________?

100 V/cm 6 V/cm 1000 V/cm More than 105 V/cm
Answer Explanation

MCQs 10: Zener diode can be used as__________________?

ac. voltage regulator only dc. voltage regulator only both D.C and A.C voltage regulator none of the above
Answer Explanation

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