Regulated Power Supplies – 1 – 1

1. Regulation of a D.C. power supply is given by :

(a) product of no-load output voltage and full-load current
(b) ratio of full-load output voltage and full-load current
(c) change in output voltage from no-load to full-load
(d) change in output impedance from no-load to full-load

Answer
Answer : (d)

Explanation
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2. 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

Answer
Answer : (b)

Explanation
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3. In an unregulated power supply, if input a.c. voltage increases, the output voltage ……….

(a) increases
(b) decreases
(c) remains the same
(d) none of the above

Answer
Answer : (a)

Explanation
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4. A power supply which has a voltage regulation of ……….. is unregulated power supply.

(a) 0 %
(b) 0.5 %
(c) 10 %
(d) 0.8 %

Answer
Answer : (c)

Explanation
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5. Commercial power supplies have voltage regulation ………..

(a) of 10 %
(b) of 15 %
(c) of 25 %
(d) within 1 %

Answer
Answer : (d)

Explanation
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