NEWEST FDNY Z51/ Z-51 REFRIGERATION TEST EXAM QUESTIONS AND VERIFIED CORRECT ANSWERS ALREADY GRADED A+ 2024 – 2025 UPDATE (ACTUAL EXAM)

NEWEST FDNY Z51/ Z-51 REFRIGERATION TEST EXAM QUESTIONS AND VERIFIED CORRECT ANSWERS ALREADY GRADED A+ 2024 – 2025 UPDATE (ACTUAL EXAM) A FDNY permit is required to conduct hot works for?  Use of oxygen and flammable gas FDNY is most concerned with which ASHRAE refrigerant classification?  A3 How long must a fire alarm log book be kept?  6 months What is the minimum requirement an engineer needs to log readings?  Once per shift You are the only engineer on duty with a machine running. A vice president tells you to shovel snow. What should you do?  Do not leave the building How often must you do emergency power testing?  Monthly What is the responsibility of a B29 COF holder?  Inspect the battery system Why is a refrigerant gauge called a compound gauge?  It reads positive pressure and vacuum Which of the following does not require flame resistant treatment?  Artwork in a museum An engineer observes a gauge that saturation pressure of a refrigerant. If chilled water is circulated as the cooling medium this reading best be used to estimate the:  Temperature of chilled water being pumped to the spaces being cooled Regardless of the ASHRAE refrigerant classification in use, in the event of a refrigerant escape the engineer should be aware of:  Asphyxiation What type of refrigerant is found inside the machines gauges?  Same type of refrigerant inside the machines If resistance is cut in half, what happens to the power factor?  Increases by a factor of two What are pre hot works procedures preformed prior to hot works?  Check area once a day leading up to hot works