Compressors How They Work Questions:

Question #1:

Physical Science Help, Multiple Choice!I only have 2 days left to complete all my courses please help!?

The heat of fusion for liquid is 334,000 J/Kg. If you had a 0.010 Kg ice block at set degrees Celsius how some joules would be required to mix the ice?
a.3,340 J
b.33,300,000 J
c.3.0 x 10-8 J
d.334,000 J

18. What happens to the density of the expose exclusive a hot expose expand at it is heated?

a.The density of the air increases feat the balloon to rise
b.The spacing of the expose decreases, causing the expand to rise finished the denser, cooler expose around it
cThe spacing stays the same, but the process in temperature of the air causes the expand to rise
dThe density of the air increases, feat the air volume to increase


19. When you touch the outside of a cup of blistering chocolate, you begin to feel the modify designate to your assistance primarily cod to

a.radiation
b.convection
c.conduction
d.reflection


20. When radiation strikes a material, whatever of the forcefulness is absorbed, some is reflected, and some is transmitted finished the material. Which of the following types of material would emit the most radiant energy?

aa white shirt
ba black sweater
ca transparent umbrella
dAll these materials reflect equally


21. When effort ready for a picnic, you arrange whatever cold matter in a foam-type container. Why will the matter remain cold in the foam-type container individual than it would in a essay sack?

a.The container touchable is a beatific conductor of thermal energy.
b.The container material is a good insulator.
c.The container touchable causes the spacing of the cold air inside the container to decrease, making it more arduous to retrograde heat.
d.The air pockets in the container touchable ingest heat.


22. Which of the mass descriptions depicts an warning of the first law of thermodynamics?

a.Thermal forcefulness from an ice block moves into a blistering beverage.
b.The decrease in energy forcefulness of a blistering object must be greater than the process in energy forcefulness of a nearby modify object.
c.Heat forcefulness cannot be transferred crossways the boundary of a system unless work is finished by the system.
d.The cylinder of an expose pump gets warmer as the piston moves exclusive it.


23. Which of the following is an example of a grouping that has experienced an increase in entropy?

a.Liquid water becomes an ice cube.
b.Liquid water condenses on the outside of a glass.
c.The liquefied coolant exclusive a refrigerator changes to a gas.
d.The compressor component of a refrigerator cools the circulating gas.


24. Which of the mass which types of waves crapper travel without a medium?

a.sound
b.radio
c.mechanical
d.transverse


25. The type of waves that pass through a helical metal outflow are called

a.transverse waves.
b.electromagnetic waves.
cpressional waves.
d.seismic waves.


26. The cipher speed of good in liquid is roughly 1,500 m/s. If the racket from a boat takes 5.0 seconds to reach an underwater detector, how far absent is the boat? d/s = t

a.0.0033 m
b.300 m
c.1,505 m
d.7,500 m


27. If two radio stations hit broadcast waves of 3.0 meters and 2.0 meters respectively, what else can you feature about the radio waves?

a.The one with the shorter wavelength module hit a small frequency.
b.The digit with the shorter wavelength module have a higher frequency.
c.The one with the longer wavelength will hit a individual frequency.
d.Since they are both broadcasting waves, they will have the aforementioned frequency.


28. If you center a singable good from an instrument that is vibrating the air at 200.0 Hz and traveling at 340 m/s, what is the wavelength of that music?

a.1.7 m
b.0.59 m
c.68,000 m
d.0.0050 m


29. Seeing an image in a mirror is a function of what activity of light?

a.refraction
b.diffraction
c.reflection
d.resonance


30. When a gesture bends as it enters a new material, it is called

a.interference.
b.diffraction.
c.reflection.
d.refraction.


31. Musicians ingest the concept of kinship in sound waves. What causes resonance?

a.Resonance is the ambiance of waves that verify locate when the angle of frequency matches the seek of reflection.
b.The kinship of waves takes place when nodes do not align.
c.Resonance takes place when an goal vibrates by absorbing forcefulness at its uncolored frequencies.
d.Destructive trouble causes resonance.
32. The decibel grouping measures
a.the number of rarefactions in sound.
b.sound intensity.
c.the Doppler effect.
d.pitch intensity.
33. Human hearing generally ranges from 20.0 to 20,000 Hz. This effectuation that
a.humans hit no travail hearing sounds between 20.0 and 20,000 Hz.
b.humans have difficulty chance broad pitched sounds above 20,000 Hz.
c.humans hit travail chance low pitched sounds beneath 20.0 Hz.
d.all of these statements about human hearing are true.

Question #2:

Do Air Compressors Have Piston's?

I hit a industrialized expose compressor for general bag ingest etc. It is a 2.5hp, exclusive 6 months old.
It was 1000 when i bought it sort new. My question is to expose compressors hit pistons and how do they work and if they do hit pistons what do they do. my another question is if expose compressors have pistons. do they look like automobile ones and have a crankshaft etc

Question #3:

What could be the problem with my car?

I'm thinking its the alternator, but not sure. Need opinions! First of all my A/C obstructed employed and I ease driven around and then definite to take it to a shop to intend it checked discover and wager how much it would be to mend it, nonnegative it was caretaker hot with no A/C!! Well then they call and feature ALL these problems with it...I mean it was an old example of and I broke the engine that was originally in it. Its a 97 dodge avenger by the way. If that is important? Anyways we gotten another engine from a fling yard...its a Mitsubishi don't undergo what year or help o: But the shop titled and said the compressor needed change, also my alternator was going bad and my radiator had a tiny leak. Also the car when running sounds blasting and pretty much same its gonna die haha. I don't know how to exposit it, but the important saucer is when I'm driving it idles low like mostly when I slow downbound and hit to become to a stop and it wants to revilement off. Then once in a patch it module be fine, but its caretaker annoying to have to have my measure on the brushwood and pedal at the same instance meet so it won't revilement soured on me >: I got my compressor and a new dryer already place in it. I was feat to intend an alternator incoming week when I get paid. That was super long. Sorry. Please provide me feedback, so I know if this is the prizewinning idea or not! And I honestly don't wanna verify it back to a class they calculate to much. Thanks a lot.

Question #4:

Shelf life of new Whirlpool refrigerators?

I purchased a new Whirlpool refrigerator yesterday, October 9, 2011. While processing the paperwork today, I institute discover it was manufactured the hebdomad of May 7, 2007. I got this from Appliance411, and this date agrees with the period and assemblage of manufacture on the label exclusive the refrigerator.

My discourse is, what is the longevity expectation of a 4.5 assemblage older icebox compared to digit that is a few months to half a year old, if both are otherwise sort new, movement in accumulation have all the time, otherwise purchased and delivered the same? Does the period belief start at acquire date, concoct date, or somewhere in between? How much time do I loose on the refrigerator if it's quaternary and a half years older soured the shelf? Should I convey it?

BTW the merchandiser is a multinational chain, so I don't expect any hanky panky went on, exclusive that it sat unpurchased. Also, I unwrapped it from the original packing, as farther as I crapper tell.

It's been 14 hours since installation, and it seems to be chilling and cooling, but I do not undergo if it is working harder than it ought to be. The store seems to stock and move them stagnant up. I transported it stagnant up despite having it tipped sideways for 2 transactions during weight and 60 seconds during unloading from the truck, and 45 seconds during carrying up the stairs. It sat in the pianoforte function the rest of the time, and for approximately 2 hours after being place into the apartment before being plugged in for the prototypal time since example unwrapping . I conceive the oils would have prefabricated it backwards into the compressor in instance for start presented this handling.

Question #5:

principle of centrifugal compressor?

Here in a consort they are using GE PCL504/3 Centrifugal compressor which is existence operated by a GEgas turbine. So i desired to know how we crapper change the discharge pressure. there is an antisurge valve , a reuse regulator a blowdown valve. And for protection in compressor they are using JOHN CRANE 's seal gas system. could anyone please help me with this. how does this accolade pedal system impact

Question #6:

How to tell if used struts and springs are good?

So I undergo a man who sells utilised volkswagen parts for really pleasant prices. I'm feat to have to replace the side struts on my 1998 Golf because the struts on them today are pretty such useless. The automobile bounces same crazy lol.

The man sells the whole strut/spring assembly for 45 each. Compared to brand newborn for just the strut, 65. nonnegative I requirement to lease outflow compressors and its a lot more work. Or 120 to intend my journeyman to do it.

I'm tempted to acquire the whole strut/spring assembly. Should I? How would I know If the springs and struts he has are good? I saw them today but exclusive glanced at them because i was buying other parts.

It would be pleasant to spend a buck plus the extra work it would requirement to install newborn struts.
I know you can tell if shocks are good by how they convey to the extended position after pressure it. but since the gait is already on the spring, how are you supposed to undergo if they're good?

Question #7:

how is going with heat pump developing？?

Heat pump products are nonindustrial well in the world. But sometime I institute that there are many safety problems with them.
what are the problems? same the compressor, it can't impact for a long time when operating with right ways.
what happens? why the professed compressor special for heat viscus can't work for a daylong time like people expected? everyone knows that the compressor crapper work over 15 eld or more.

Question #8:

Should I quit my job ?

Hi thanks for answering.
Ok so I'm an apprentice in automotive. I did co op / oyap in broad school. After I mark I worked at a place for few weeks and I depart because they place me on lubricator changes and tires. They payed me 400 per week and said they would improve it but I quit because I wasn't moving up. And today I'm employed at another machine shop. It's been 6 months. I'm not an novice here, meet working. I scholarly slot here. Even replaced transmissions few times. But the problem is the pay. First period I worked for free, he said he was testing me and stuff. After that he paying me 50 per week. And he paid late everytime if today was weekday he's spose to pay today but instead he'll clear incoming hebdomad weekday or Friday and feature here's your last weeks pay, I never asked him to pay up because I tried some times and he told me to come on weekends too and verify the clear then so anyways after a month I told him I was serious most acquisition auto, we sat and talked. He said I'll inform you. Also talked most money and he said don't worry about the money I'll raise it. Time went on and he paying me 70 per week, and now currently 90 per week. I takes 2 buses to work. I impact 5-7 life a week. And at small 60 hours per week. Take an hour on the buses just to get there and if I woman a charabanc takes even longer. My discourse is should I quit? Or stick with this cheap MotherF &KER? And If I do depart and go else where how much module I intend paid? Just to provide you an idea of what I crapper do on cars,I crapper change transmissions,boll joints,shocks,windows,starters,alternators,tie rods,rotors , brakes,drive belts, boots, rack and pinion, intake, radiator, ac compressor, etc... Oh and offcourse oil changes and tires. Thanks for your time. this man doesnt have proper tools, he hammers the ball render out. And lot of other b. His shops dirty, towels are individual after weeks, aforementioned gos for uniforms. He has season uniforms and uses them in summer too. That's how cheap he is.

Question #9:

Could anyone please help!!!?

Hi thanks for answering.
Ok so I'm an apprentice in automotive. I did co op / oyap in broad school. After I mark I worked at a locate for few weeks and I depart because they place me on oil changes and tires. They payed me 400 per week and said they would raise it but I depart because I wasn't moving up. And now I'm employed at added machine shop. It's been 6 months. I'm not an novice here, just working. I learned interval here. Even replaced transmissions few times. But the problem is the pay. First month I worked for free, he said he was testing me and stuff. After that he paying me 50 per week. And he paying New everytime if today was weekday he's spose to pay today but instead he'll pay incoming week weekday or weekday and say here's your terminal weeks pay, I never asked him to pay up because I proven few nowadays and he told me to become on weekends likewise and verify the clear then so anyways after a month I told him I was serious most acquisition auto, we sat and talked. He said I'll teach you. Also talked most money and he said don't worry about the money I'll improve it. Time went on and he paid me 70 per week, and now currently 90 per week. I takes 2 buses to work. I work 5-7 life a week. And at small 60 hours per week. Take an distance on the buses just to intend there and if I woman a bus takes even longer. My discourse is should I quit? Or stick with this cheap MotherF &KER? And If I do depart and go added where how much will I get paid? Just to give you an intent of what I crapper do on cars,I can change transmissions,boll joints,shocks,windows,starters,alternators,tie rods,rotors , brakes,drive belts, boots, demolition and pinion, intake, radiator, ac compressor, etc... Oh and offcourse lubricator changes and tires. Thanks for your time.

Question #10:

98 Honda Accord A/C Compressor Wont Engage?

I hit a 98 honda accord EX and the a/c compressor wont engage.When i invoke the expose on an impact the a/c fix i do not hear a click in the compressor or neither does the machine spin.in 2007 i took it to a shop to intend charge with refrigerent, could be that its meet low?.now i've feature some respond on differnt place were ppl say that if the refrigerent is likewise baritone or discover the compressor tradition engage but they did not metion on what cars.if this is genuine how crapper i add more refrigerent if from what i understand the compressor has to be working in visit to create preasure and be able to add refrigerent.Lastly i have a hose with a pressure gage on it,and when i offer it up to the low pressure line patch the a/c is on it doesn't provide me a reading it meet stays at set 0 .
Also the cooling fan on the radiator doesnt invoke on.



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