60 Hertz Main Noise: Self-Assessment Questions

1. Which of the following is NOT a source of 60 Hz Main Noise?
A. Power Lines
B. Computers
C. Multimeters
D. Public power grid lighting

2. True or false: 60 hz noise is an internal source of noise?

3. You are trying to measure an ECG signal with a range of 20-100 Hz signals. What type of filter should be used to filter 60 Hz main noise? What cutoff frequencies would you use?

Follow this link to check your answers to the SAQs above.