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

EXPLANATION

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

EXPLANATION

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

EXPLANATION

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

EXPLANATION

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

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

ANSWER

EXPLANATION

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