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 139 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
Wow, this really help

billybob123

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

closed gentian closed gentian
Building competency in safety Building competency in safety
Safety-Lok syringe. Safety-Lok syringe.
Safety glasses should be worn at all times when working on or around any vehicle or servicing any ... Safety glasses should be worn at all times when working on or around any vehicle or servicing any ...
The small arrows indicate the air bypassing the throttle plate in the closed throttle position. ... The small arrows indicate the air bypassing the throttle plate in the closed throttle position. ...
National Patient Safety Goals for Acute-Care Hospitals National Patient Safety Goals for Acute-Care Hospitals
Video: Red Blood Cells - Erythropoietin (EPO)

For a complete list of videos, visit our video library