TUNE YOUR LOOP: Electrical Noise Effects on Instrumentation Control Equipment

TUNE YOUR LOOP: Questions to keep you sharp.

Tune Your Loop is a series of posts consisting of questions from ISA Training Courses.

1. If the primary source to a single phase transformer is above 150 V how must the secondary side be grounded?

  1. it is not supposed to be grounded
  2. to the service ground
  3. through a spark gap
  4. by DCS

2. Electrical current will only flow through a completed circuit.

  1. TRUE
  2. FALSE

3. Earth ground connections are used in order to cause a circuit breaker to instantaneously trip in the event of an unintentional ground fault.

  1. TRUE
  2. FALSE

4. A grounding conductor normally carries current.

  1. TRUE
  2. FALSE

5. A grounded conductor normally carries current.

  1. TRUE
  2. FALSE

 

What are your answers before you read ahead?

1. b

2. a

3. a

4. b

5. a

 

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

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  • I like how you have questions 4 and 5 together so the questions them selves become more of an educational tool. Good job.

    • Juliann Grant

      Thanks Don! Glad you stopped…

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