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 . Most manufacturers illustrate the wiring in their equipment through the use of
    pictorial and line diagrams
  • 2 . Which component of the immersion heater combustion chamber separates the combustion chamber and makes sure air fully circulates as it travels through the heater?
    Vertical partition
  • 3 . On a trouble call, you determine that voltage is present from R to Y at the thermostat but no voltage is present at the condenser contactor. In this situation, you would suspect that the
    Y wire is broken
  • 4 . 37. (414) What is the result if the length of the stroke is increased on a piston type chemical pump?
    Amount of chemical pumped increases.
  • 5 . What would most likely cause a heavy soot deposit in the burner on a preway tent heater?
    Restricted combustion air inlet
  • 6 . 50. (212) To check the relationship of the condensing refrigerant to the ambient air temperature, you would use
    the high-side gauge readings
  • 7 . 120. (026) On what basis should you check and clean the air filters used on air compressors?
    Weekly
  • 8 . 48. (010) You are retrofitting a system that does not have a receiver. To do the job properly, you would store the refrigerant in
    a recovery cylinder
  • 9 . 107. (020) Which item does not indicate the cylinders are unloading when you are adjusting a hydraulic unloader mechanism?
    The oil pressure will excessively fluctuate.
  • 10 . 19. (206) The motor problems that can occur inside a hermetic compressor are
    an open circuit, short circuit, and grounded circuit.