This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Most switches used for safety controls in HVACR circuits: A) Are normally closed and wired in ... (Read 88 times)

sheilaspns

  • Hero Member
  • *****
  • Posts: 567
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lauravaras

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

c


sheilaspns

  • Member
  • Posts: 567
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

zacnyjessica

  • Member
  • Posts: 345
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

A closed circulatory system. A closed circulatory system.
Neural Circuits and Maternal Behavior Neural Circuits and Maternal Behavior
Whenever a vehicle is raised off the ground, a safety stand should be placed under the frame, axle, ... Whenever a vehicle is raised off the ground, a safety stand should be placed under the frame, axle, ...
Adding propane to the air inlet of an engine operating in closed loop with a working oxygen sensor ... Adding propane to the air inlet of an engine operating in closed loop with a working oxygen sensor ...
The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ... The material safety data sheet (MSDS) for sulfuric acid showing the detailed technical information ...
Controls of Temperature Controls of Temperature
Video: Methods of carbon dioxide transport - carbaminohemoglobin and bicarbonate ions

For a complete list of videos, visit our video library