Regulated DC Power Supply Mcqs
Q.1: Zener diode can be used as__________________?-
A. c. voltage regulator only
B. c. voltage regulator only
C. both C and C voltage regulator
D. none of the above
Q.2: The rupture of co-valent bonds will occur when the electric field is__________________?W
A. 100 V/cm
B. 6 V/cm
C. 1000 V/cm
D. More than 105 V/cm
Q.3: An ideal regulated power supply is one which has voltage regulation of________________?W
A. 0%
B. 5%
C. 10%
D. 1%
Q.4: A power supply which has voltage regulation of ____________ is unregulated power supply?X
A. 0 %
B. 5 %
C. 10 %
D. 8%
Q.5: In an unregulated power supply, if input a.c. voltage increases, the output voltage _______________?d
A. Increases
B. Decreases
C. Remains the same
D. None of the above
Q.6: Commercial power supplies have voltage regulation ______________?A
A. of 10%
B. of 15%
C. of 25%
D. within 1%
Q.7: In an unregulated power supply, if load current increases, the output voltage _____________?\
A. Remains the same
B. Decreases
C. Increases
D. None of the above
Q.8: A Zener diode utilises_____________characteristic for voltage regulation?I
A. Forward
B. Reverse
C. Both forward and reverse
D. None of the above
Q.9: As the junction temperature increases, the voltage breakdown point for Zener mechanism _______________?g
A. Is increased
B. Is decreased
C. Remains the same
D. None of the above
Q.10: In a 15 V Zener diode , the breakdown mechanism will occur by ______________?M
A. Avalanche mechanism
B. Zener mechanism
C. Both Zener and avalanche mechanism"
D. None of the above

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