Question

Load regulation is determined by
(a) changes in load current and input voltage
Mb) changes in load current and output voltage
(c) changes in load resistance and input voltage
(d) changes in zener current and load current​

Answer 1

The correct answer is option (B.) changes in load current and output voltage.

Explanation:

• Load regulation refers to the ability to maintain a constant voltage output from a power supply despite changes or variability in the input load.
• Load regulation is determined by changes in load current and output voltage.
• The load regulation depends on the output resistance of the supply and a low resistance results into a low regulation as shown from the relationship below.
• RTH is the output resistance of the supply, IFL the full load current (at the minimum resistance) RL(min) the minimum load resistance.

Answer 2

Option (C) is correct.

Load regulation is determined by changes in load resistance and input voltage.

About Load regulation :

• The capacity to maintain a specific output voltage despite fluctuations in the input line voltage is known as line regulation.

• The load regulation is determined by the supply's output resistance, and a low resistance results in a low regulation, as illustrated in the graph below.

• The voltage drop when switching from no load to full load on a power supply is known as load voltage regulation.