Ideal regulated power supplies have ______ % voltage regulation.

Question

Question

This question was previously asked in

RRB ALP Electronics Mechanic 23 Jan 2019 Official Paper (Shift 3)

Answer 1

Concept:

Voltage regulation is the ratio of the difference in voltage drop from no load and the full load to the no-load voltage.
Mathematically, there are two ways to express the voltage regulation:

\(VR = \frac{{{V_{NL}} - {V_{FL}}}}{{{V_{NL}}}}\)

VNL = No-load voltage and

VFL = Full load voltage

\(VR = \frac{{{V_{NL}} - {V_{FL}}}}{{{V_{FL}}}}\)

Observation:

Ideally for a regulated power supply VNL = VFL

So, the Voltage regulation is:

\(VR = \frac{{{V_{NL}} - {V_{FL}}}}{{{V_{NL}}}}=0\)%

It should be as low as possible for the proper operation of the electrical devices.