« previous next »

Author Question: What is the advantage of using a pressure relief valve to protect a receiver instead of a fusible ... (Read 113 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?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
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?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Glaucoma. (a) A buildup of pressure within the eye cavities, often caused by a blockage of vessels t Glaucoma. (a) A buildup of pressure within the eye cavities, often caused by a blockage of vessels t
A GDI system uses a low-pressure pump in the gas tank similar to other types of fuel-injection ... A GDI system uses a low-pressure pump in the gas tank similar to other types of fuel-injection ...
Pressure drop after 10 minutes on a normal port fuel-injection system. Pressure drop after 10 minutes on a normal port fuel-injection system.
Apply direct pressure under the zygomatic arch. Moving laterally, gently press up and under the ... Apply direct pressure under the zygomatic arch. Moving laterally, gently press up and under the ...
Oil Pressure Testing Oil Pressure Testing
Afterload is the pressure that the ventricles must overcome in order to open the aortic and pulmonic Afterload is the pressure that the ventricles must overcome in order to open the aortic and pulmonic
Video: Non-specific disease resistance mechanisms & Skin's defense barriers

For a complete list of videos, visit our video library