« previous next »

Author Question: What is the advantage of using a pressure relief valve to protect a receiver instead of a fusible ... (Read 79 times)

craiczarry

  • Hero Member
  • *****
  • Posts: 527
on: Jul 24, 2018
What is the advantage of using a pressure relief valve to protect a receiver instead of a fusible plug?
 
  A) Pressure relief valves are less expensive.
  B) The pressure relief valve resets itself.
  C) Pressure relief valves can also be used to check the receiver pressure.
  D) It is impossible for a pressure relief valve to malfunction.

Question 2

Why is it necessary to have controls for maintaining a minimum high-side pressure on outdoor air-cooled condensers?
 
  A) Compressors will not operate correctly if the compression ratio is too low.
  B) The chemical components in the refrigerant will separate if the pressure is allowed to drop below the normal minimum operating pressure.
  C) The refrigerant will not condense if it is excessively cooled.
  D) Refrigeration metering devices require a minimum pressure drop to operate.


diana chang

  • Sr. Member
  • ****
  • Posts: 288
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Blood Pressure Cuff Blood Pressure Cuff
A steady but low reading could indicate retarded valve or ignition timing. A steady but low reading could indicate retarded valve or ignition timing.
Pressure Zones Drive Winds Pressure Zones Drive Winds
Hormonal and nervous factors influencing blood pressure Hormonal and nervous factors influencing blood pressure
As a result of the pressure gradient in the following picture, what happens to transpiration? As a result of the pressure gradient in the following picture, what happens to transpiration?
Physics - Density and Pressure Physics - Density and Pressure
Video: How do the different types of chromatography work? (No Audio)

For a complete list of videos, visit our video library