Question

The percentage voltage regulation (VL) is given by_________

(a) (VNL-VL)/VNL*100

(b) (VNL+VL)/VNL*100

(c) (VNL-VL)/VL*100

(d) (VNL+VL)/VL*100

This question was posed to me in an online interview.

The doubt is from Voltage Regulation Using Zener Diode topic in portion Application of Diodes of Electronic Devices & Circuits

Answer 1

Correct answer is (a) (VNL-VL)/VNL*100

The best explanation: The change in the output voltage from no load to full load condition is called as voltage regulation, where VNL is the voltage at no load condition. It is used to maintain a nearly constant output voltage. If the regulation is high, the output voltage is stable.