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

Author Question: What is a multiple vacuum? What will be an ideal response? ... (Read 12 times)

acc299

  • Hero Member
  • *****
  • Posts: 569
on: Jul 26, 2018
What is a multiple vacuum?
 
  What will be an ideal response?

Question 2

How can the centrifugal compressor speed be higher than the motor speed?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Joy Chen

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 26, 2018
Answer to Question 1

Multiple evacuation is several short vacuums in succession that are broken in between with dry nitrogen. The nitrogen absorbs and/or dislodges moisture in the system, making it easier to remove on subsequent evacuations.

Answer to Question 2

This is accomplished by using speed increasing gears.


acc299

  • Hero Member
  • *****
  • Posts: 569
Reply #2 on: Jul 26, 2018
Thank you!


Joy Chen

  • Sr. Member
  • ****
  • Posts: 354
Reply #3 on: Jul 26, 2018
Always glad to help...


« previous next »
 

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Phloem wound response. Phloem wound response.
Using a vacuum hose and a test light to ground one cylinder at a time on a distributorless ignition ... Using a vacuum hose and a test light to ground one cylinder at a time on a distributorless ignition ...
Using a vacuum hose and a grounded test light to ground one cylinder at a time on a DIS. This works ... Using a vacuum hose and a grounded test light to ground one cylinder at a time on a DIS. This works ...
Schematic diagram showing polyclonal response by B cells against linear epitopes. Schematic diagram showing polyclonal response by B cells against linear epitopes.
Achiral Molecule with Multiple Stereocenters Achiral Molecule with Multiple Stereocenters
Experiments showing that long- or short-day plants flower in response to night length. Each horizont Experiments showing that long- or short-day plants flower in response to night length. Each horizont
Video: Protein digestion - stomach & small intestine

For a complete list of videos, visit our video library