SOLUTION

The Q-meter is primarily used to measure the quality factor (Q-factor) of resonant circuits, which includes inductors and capacitors. It is also used to measure impedance, particularly in RF (radio frequency) applications.

Purpose:

• The Q-meter is primarily used for measuring impedance.

Principle of Operation:

• The Q-meter works on the principle of resonance. This means it operates at a specific frequency where the inductive and capacitive reactance in the circuit cancel each other out, resulting in maximum current flow.

3. Q-Factor:

• The Q-factor is a measure of the quality of a resonant circuit. It is defined as the ratio of the voltage across the capacitor (Vc) to the total applied voltage (V):

Q-Factor = Vc / V

• A higher Q value signifies a more efficient system with lower energy loss.