Question

Under maximum power transfer conditions, which one is true?

A) The Thevenin resistance of the source equals the equivalent resistance of the load.
B) The equivalent load resistance is very large compared to the equivalent of the source.
C) The equivalent load resistance is very small compared to the equivalent of the source
D) The algebraic sum of all resistances in the source equals the algebraic sum of all the resistances in the load.

Answer 1

Under maximum power transfer conditions, the Thevenin resistance of the source must equal the equivalent resistance of the load. This optimizes power transfer by matching the output impedance of the source to the input impedance of the load in resistive circuits.

Step-by-step explanation:

Under maximum power transfer conditions, the correct statement is A) The Thevenin resistance of the source equals the equivalent resistance of the load. This is a key concept in circuit theory and is particularly important in electrical engineering. When the load resistance is matched to the Thevenin resistance of the source, the power transferred to the load is maximized.

This principle is based on the fact that power transfer is optimized when the output impedance of the source is equal to the input impedance of the load, which in the case of purely resistive circuits, translates to the source's Thevenin resistance being equal to the load resistance. This results in half of the voltage being dropped across the Thevenin resistance and half across the load resistance, allowing for maximum power transfer.