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Other Fields Homework Help Trades and Apprenticeship Topic started by: juicymae92 on Feb 23, 2018



Title: What effect does moisture have on a refrigeration system?
Post by: juicymae92 on Feb 23, 2018
What effect does moisture have on a refrigeration system?
 
  A) Corrosion of metals and freeze-up at the expansion valve
  B) Lower-than-normal superheat
  C) Increased low-side pressure
  D) Increased head pressure



[Ques. 2] Acid is created within a refrigeration system when:
 
  A) Noncondensable gases collect within the condenser.
  B) The compression ratio within the system is significantly increased.
  C) Moisture is teamed with refrigerant in the refrigeration system.
  D) There are large quantities of air within a refrigeration system.



[Ques. 3] What is the total circuit resistance of three heat strips wired in series if each strip has a resistance of 12 ?
 
  A) 36 B) 4 C) 12 D) 3



[Ques. 4] When properly done, evacuation also ensures:
 
  A) An increase in the system compression ratio.
  B) A reduction in the amount of condenser surface available.
  C) An increase of refrigerant pressure.
  D) A leak-tight system.



[Ques. 5] What is the voltage drop across a 30- resistor with a current draw of 5 A?
 
  A) 5 A/30 = 0.17 V B) 30/5 A = 6 V C) 30  5 A = 150 V D) 5 A + 30 = 35 V


Title: What effect does moisture have on a refrigeration system?
Post by: Espresso on Feb 23, 2018
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Title: What effect does moisture have on a refrigeration system?
Post by: juicymae92 on Feb 23, 2018
Makes tons more sense now!


Title: What effect does moisture have on a refrigeration system?
Post by: Espresso on Feb 23, 2018
:)