ISA Interchange

Welcome to the official blog of the International Society of Automation (ISA).

All Posts

TUNE YOUR LOOP: Electrical Noise Effects on Instrumentation Control Equipment

TUNE YOUR LOOP: Questions to keep you sharp.



1. The neutral conductor is not intentionally the system grounding conductor.

  1. TRUE
  2. FALSE

2. The law that describes the relationship between voltage, resistance, and current is called _____.

  1. Ohm's Law
  2. Faraday's Law
  3. Law of Relativity
  4. Pythagorean Theory

3. Resistance is what kills in an electrical shock.

  1. TRUE
  2. FALSE

4. Transient noise is permanent in a DC system.

  1. TRUE
  2. FALSE

5. Harmonics appear as a multiple of the fundamental sine wave.

  1. TRUE
  2. FALSE


What are your answers before you read ahead?

1. a

2. a

3. b

4. b

5. a


From the ISA Course Electrical Noise Effects on Instrumentation Control Equipment (TI21) pre-instructional survey.

Related Posts

Newsweek Vantage Report on Cyber Risks to Critical Infrastructure: ISA's the Expert Partner

Newsweek Vantage recently published an independent report on cyber risks to critical infrastructure—and t...
Kara Phelps Mar 24, 2020 3:11:27 PM

Auto Manufacturers Could Build Ventilators: The Power of Standards in a Global Crisis

As COVID-19 shutters manufacturing plants in North America and around the world, GM, Ford, and Tesla are ...
Kara Phelps Mar 19, 2020 1:49:27 PM

Leveraging Technology to Work in the Age of Uncertainty

Globalization has been a very successful strategy for many businesses. Distributing the supply chain acro...
Contributing Author Mar 18, 2020 5:00:00 AM