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 153 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

Alyson.hiatt@yahoo.com

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Phytochrome controls germination by responding to red/far red light signals. Phytochrome controls germination by responding to red/far red light signals.
Neural Circuits and Maternal Behavior Neural Circuits and Maternal Behavior
Relative Ventricular Size in Chronic Schizophrenics and Controls Relative Ventricular Size in Chronic Schizophrenics and Controls
Creede, Colorado, circa 1890, a rough silver mining town that grew from 660 people in 1889 to over 1 Creede, Colorado, circa 1890, a rough silver mining town that grew from 660 people in 1889 to over 1
Four types of covalent modifications that controls that activities of enzymes Four types of covalent modifications that controls that activities of enzymes
Neural Circuits: Diverging & Converging Neural Circuits: Diverging & Converging
Video: Structures that affect circulation - heart and MABP

For a complete list of videos, visit our video library