RETA INDUSTRIAL REFRIGERATION BOOK 3 (2023 Revision) NEWEST 2024 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS

Whose responsibility is it to determine if an area is considered confined space? (pg. 1-11) A) The owner/employer B) The employee that is going to be working in the area C) Your immediate supervisor D) OSHA - ANSWERS,A) The owner/employer Fire watchers must be trained in ____________? (pg. 1-8) A) Recognizing potential combustible material locations at the facility B) The use of fire extinguishing equipment C) CPR D) Confined space entry requirements - ANSWERS,B) The use of fire extinguishing equipment The reason for testing the application of a lockout device is to ________? (pg. 1-11) A) Prove that the LOTO procedure is being followed completely B) Be sure there is no back feed to the circuit from another source C) Be sure that the lockout was applied to the correct device D) Confirm that the energy source has indeed been made safe - ANSWERS,D) Confirm that the energy source has indeed been made safe Compressor safety system checks should be conducted? (pg. 2-11) A) Daily B) Quarterly C) Monthly D) Annually - ANSWERS,D) Annually The primary advantage of using refrigerant instead of water to cool a compressor head is? (pg. 2-20) A) Refrigerant has greater cooling capacity B) Refrigerant is easier to pump C) Refrigerant has lower weight per gallon D) Refrigerant is less expensive - ANSWERS,A) Refrigerant has greater cooling capacity Cooling screw compressors is usually accomplished by cooling the? (pg. 2-22) A) Water B) Refrigerant C) Engine Room D) Oil - ANSWERS,D) Oil After re-aligning the shafts on any driven equipment, it's a good idea to perform? (pg. 2-28) A) A hazard analysis B) An oil change C) A vibration analysis D) An energy audit - ANSWERS,C) A vibration analysis A compressor's high-pressure cutout set point may NOT exceed ____________% of the associated pressure relief valve's set point? (pg. 2-14) A) 80 B) 90 C) 75 D) 95 - ANSWERS,B) 90 On most compressors, the primary way of separating oil from the discharge refrigerant gas is by reducing the? (pg. 2-45) A) Suction pressure B) Discharge piping size C) Suction temperature D) Discharge gas velocity - ANSWERS,D) Discharge gas velocity Vibration analysis is valuable in predicting compressor? (pg. 2-28) A) Oil flow B) Capacity drop C) Bearing failure D) Oil pressure drop - ANSWERS,C) Bearing failure Most standard industrial refrigeration screw compressor oil filters filter to? (pg. 2-37) A) 1/15th of an inch B) 0.0015 millimeters C) 5 microns D) 15 microns - ANSWERS,D) 15 microns Refrigerant grade oil is hungry for? (pg. 2-45) A) Ammonia B) Air C) Sludge D) Moisture - ANSWERS,D) Moisture The speed that a compressor slide valve moves is controlled by? (pg. 2-7) A) The pulse duration controlled by the microprocessor B) Metering check valves between the directional control valve and the slide valve assembly C) The dead band programmed in the compressor control parameters D) The span programmed in the compressor suction control parameters - ANSWERS,B) Metering check valves between the directional control valve and the slide valve assembly