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juicymae92 juicymae92
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6 years ago
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
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EspressoEspresso
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6 years ago
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juicymae92 Author
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#2
6 years ago
Makes tons more sense now!
wrote...
#3
6 years ago
Slight Smile
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