TUNE YOUR LOOP: Questions to keep you sharp.
1. In an AC circuit, harmonics can cause the _____ to overheat.
- sine wave
- phase line
- neutral conductor
- grounding conductor
- both B and C
2. _____ is an unwanted component of a signal or variable.
- Frequency
- Noise
- DC signal
- A coupler
3. Noise is random variations of voltage, current, or data.
- TRUE
- FALSE
4. Which of the following is one of the causes of noise in instrumentation?
- Shielding
- Frequency
- Calibration
- Ground loop
5. Shielding should always be grounded on both ends of the same cable.
- TRUE
- FALSE
1. c
2. b
3. a
4. d
5. b
From the ISA course Electrical Noise Effects on Instrumentation Control Equipment (TI21) pre-instructional survey.