Which of the following devices is also called an insulation resistance tester?

Which of the following devices is also called an insulation resistance tester?
 
  a. Multimeter
  b. Phase tester
  c. VOM
  d. Megger

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[Ques. 2] Which of the following devices measures ohms, amps, and volts?
 
  a. Multimeter
  b. Phase tester
  c. Ammeter
  d. Megohmmeter

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[Ques. 3] What is the purpose of an ice thickness probe on a cubed-ice machine?
 
  a. It initiates and terminates defrost.
  b. It maintains proper ice cube temperature.
  c. It controls the dimensions of the ice cube.
  d. It prevents premature breaking of ice cube sheets.

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[Ques. 4] Evaporator coils found in reach-in freezers are often corroded by _____.
 
  a. repeated defrosts
  b. sanitizing solution
  c. the off-gassing of certain foods
  d. poor condensate removal

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[Ques. 5] Which procedure is not normally done during a routine maintenance check of a reach-in freezer?
 
  a. Clean evaporator coil
  b. Clean condenser coil
  c. Check refrigerant charge
  d. Check fan motors