3E151P Practice Test

Listed below are sample questions for 3E151P from our database. Register now to start taking tests for this AFSC! We have 293 questions currently in the database for this category.

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  • 1 . 111. (023) When conducting an operational check of the mechanical part of a heating, ventilation, air-conditioning, and refrigeration (HVAC/R) system, you should check
    system pressures.
  • 2 . Which refrigeration compressor is equipped with pistons and connecting rods?
    Reciprocating.
  • 3 . 110. (023) What type maintenance action do you perform on operating heating, ventilation, air-conditioning, and refrigeration (HVAC/R) systems?
    Perform an operational check
  • 4 . 41. (614) What power source is required for the bare base air conditioner?
    Three-phase, four-wire, 208/220-volt alternating current (VAC)
  • 5 . 80. (015) Which type of ice-machine evaporator operates underwater?
    Cell type
  • 6 . 64. (216) What should be done to water chillers during the winter?
    Completely drained
  • 7 . 47. (212) You should never use hand tools in a
    hot electrical panel
  • 8 . 34. (006) The Environmental Protection Agency (EPA) has developed a Significant New Alternatives Policy (SNAP) Program. This program is used to determine
    the risks that alternative refrigerants pose to human health and the environment
  • 9 . 48. (417) Which method of cathodic protection uses a rectifier?
    Impressed current system
  • 10 . 10. (404) The clarification process is used to remove
    suspended impurities