What does a frequency meter measure?

What does a frequency meter measure?

• A. Voltage of periodic signals
• B. Frequency of periodic signals
• C. Resistance
• D. Capacitance

Answer: (B)

Frequency measurement is about how often a periodic signal repeats in one second. A frequency meter reads the rate of those repeats, expressed in hertz. It does this by counting cycles or by timing the interval between peaks and then calculating frequency as 1 divided by the period. This is what distinguishes it from meters that measure voltage (amplitude), resistance, or capacitance. For example, a 60 Hz signal would show 60 cycles per second. Non-periodic signals or DC don’t have a repeating cycle, so a frequency meter isn’t meaningful for them.

Frequency measurement is about how often a periodic signal repeats in one second. A frequency meter reads the rate of those repeats, expressed in hertz. It does this by counting cycles or by timing the interval between peaks and then calculating frequency as 1 divided by the period. This is what distinguishes it from meters that measure voltage (amplitude), resistance, or capacitance. For example, a 60 Hz signal would show 60 cycles per second. Non-periodic signals or DC don’t have a repeating cycle, so a frequency meter isn’t meaningful for them.