HVAC ESCO Basic Test Review With complete Solution.HVAC ESCO Basic Test ReviewWith complete Solution.HVAC ESCO Basic Test ReviewWith complete Solution.
HVAC ESCO Basic Test ReviewWith complete Solution.
1. Multiple ccompressor csystems chave ca cequalization cline cto;
A. Maintain cequal cloads con call ccompressors
B. Maintain cequal coil clevels con call ccompressors.
C. Compensate cfor cdifferent cpressures cin cthe ccompressors.
D. Compensate cfor cevaporator cpressure cdrop.- cANS c- c c cA. cMaintain cequal
cloads con call ccompressors
2. The cpurpose cof ca cdouble csuction cline criser cis cto;
A. maintain cminimum crefrigerant cvelocities cunder cvarying cloads.
B. compensate cif cone csuction cfilter c- cdrier cbecomes cplugged.
C. prevent clow cpressure ctrips con cstart cup.
D. compensate cfor cevaporator cpressure cdrop.- cANS c- c c cA. cmaintain cminimum
crefrigerant cvelocities cunder cvarying cloads.
3. To cmeasure csuperheat, csubtract cthe;
A. low cside csaturation ctemperature cfrom cthe csuction cline ctemperature.
B. high cside ccondensing ctemperature cfrom cthe csuction cline ctemperature.
C. suction cline ctemperature cfrom cthe cambient ctemperature.
D. ambient ctemperature cfrom cthe csuction cline ctemperature- cANS c- c c cA. clow cside
csaturation ctemperature cfrom cthe csuction cline ctemperature.
cmotors care crunning, cbut cthe camp cdraw cis cdifferent con cthe cnew cmotor cas
ccompared cto cthe cother ctwo cmotors. cThis cis cmost clikely cthe cresult cof- cANS c- c c
2 c/
, A. fan cmotor cis crunning cbackward
B. the cnew cmotor cis cgrossly cover csized.
C. a cdefective creplacement cmotor.
D. , cthe cfan cblade cwas cnot cchanged cto cmatch cthe cnew cmotor- cANS c- c c cB. cthe
cnew cmotor cis cgrossly cover csized.
7. When cpumping cdown ca ccondensing cunit cto ccheck cthe creciprocating ccom-
cpressor cvalves, cthe ccompressor
should cbe cable cto cachieve;
A. 10" cHg csuction cwith ca c300 cpsig chigh cside cpressure.
B. 30" cHg csuction cwhen cdischarging cto cthe catmosphere.
C. 24" cHg csuction cwith ca c100 cpsig chigh cside cpressure.
D. 24" cpsig csuction cwith ca c200 cpsig chigh cside cpressure.- cANS c- c c cB. c30" cHg
csuction cwhen cdischarging cto cthe catmosphere.
8. Direct cDigital cControl c(DCC) cis ca ccontrol cprocess cwhich cincorporates ca
cmicroprocessor, cacting cas ca cdigital ccontroller, cupdates ca cdata-base cof cinternal
cinformation cthrough;
A. reverse caction cof cPTC.
B. the ccommon cdigital cfeed.
C. the cuse cof cSensors.
D. the cuse cof cSim ccards.- cANS c- c c cC. cthe cuse cof cSensors.
9. If ca ccompressor chas ca csevere cburnout, cwhat caccessory cshould cbe cadded cto
cclean cthe csystem?
A. A cliquid cline cdrier.
B. An caccumulator.
C. A csuction cline cdrier.
D. An cacid ccore coil cseparator.- cANS c- c c cC. cA csuction cline cdrier.
10.The cscrew-type ccompressor coperates cat ca chigh cvolumetric cefficiency cbe-
ccause;
A. there cis cno cre-expansion cof crefrigerant cin cthe cclearance cspace.
B. they care ccapable cof cvery clow cspeed coperation.
C. capacity ccan cbe ccontrolled cdown cto c90%.
D. they care cused conly con csmall ccapacity csystems.- cANS c- c c cA. cthere cis cno cre-
expansion cof crefrigerant cin cthe cclearance cspace.
11.A crooftop cpackage csystem cis ccycling con cthe chigh cpressure ccontrol. cWhat
care cthree cpossible ccauses cfor cthis cproblem?
B. Excessively cbent ccondenser cfins, ca cfaulty cpressure cswitch, cor cundercharge.
C. Dirty ccondenser, cincorrect crotation cof ccondenser cfan, cor cbad ccompressor
3 c/
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LucieLucky. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.