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Author Question: Most switches used for safety controls in HVACR circuits: A) Are normally closed and wired in ... (Read 89 times)

sheilaspns

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on: Jul 27, 2018
Most switches used for safety controls in HVACR circuits:
 
  A) Are normally closed and wired in series with the load they protect.
  B) Are normally open and wired in parallel with the load they protect.
  C) Are normally closed and wired in parallel with the load they protect.
  D) Are normally open and wired in series with the load they protect.

Question 2

The simplest plasma arc cutting units use filtered _____.
 
  a. carbon dioxide
  b. nitrogen
  c. compressed air
  d. helium


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lauravaras

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Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

c


sheilaspns

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Reply 2 on: Jul 27, 2018
Wow, this really help

mammy1697

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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