Author Question: One disadvantage infrared thermometers is that they: A) Are only available in limited quantities ... (Read 55 times)

Mr.Thesaxman

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One disadvantage infrared thermometers is that they:
 
  A) Are only available in limited quantities due to their specialized nature.
  B) Are generally less accurate than dial type pocket thermometers.
  C) Take longer to get a reading than other types of thermometers.
  D) Can only read the temperature of objects.

Question 2

The operation of a thermostatic expansion valve can best be described as:
 
  A) Spring pressure = bulb pressure + evaporator pressure.
  B) Bulb pressure = evaporator pressure + spring pressure.
  C) Bulb pressure = evaporator pressure = spring pressure.
  D) Evaporator pressure = evaporator pressure + bulb pressure.



Rilsmarie951

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Answer to Question 1

D

Answer to Question 2

B



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