An indication that proves all liquid refrigerant has changed into a vapor within the evaporator is ...

An indication that proves all liquid refrigerant has changed into a vapor within the evaporator is _____.
 
  a. the presence of some superheat
  b. a sudden increase in pressure
  c. a sudden decrease in pressure
  d. the presence of some subcooling

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[Ques. 2] A refrigerated fixture that operates with an evaporator temperature of 35F is classified as a _____.
 
  a. moderate cooling application
  b. low-temperature application
  c. medium-temperature application
  d. high-temperature application

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[Ques. 3] Comfort is normally associated with the air properties of _____.
 
  a. temperature and dew point
  b. temperature and enthalpy
  c. temperature and relative humidity
  d. dew point and relative humidity

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[Ques. 4] The packaged unit accessory used to prevent compressor oil from absorbing refrigerant is a(n) _____.
 
  a. economizer
  b. crankcase heater
  c. oil defroster
  d. outdoor thermostat

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[Ques. 5] The simplest form of economizer control is the _____.
 
  a. powered exhaust method
  b. integrated method
  c. dry-bulb method
  d. enthalpy method