FDNY Z51 Study Guide Updated 2023-2024 with All Questions and 100% Correct Answer/ FDNY Z51 Exam Updated Version
What is the minimum requirement of an engineer needs to log readings --------- Correct Answer --------- Once per shift
When entering phase 2 firemen service what statement is correct --------- Correct Answer --------- The elevator operator is the only person that can control the elevator
You are the only engineer on duty with the machine running a vice president tells you to shovel snow what should you do --------- Correct Answer --------- Do not leave the building
How often must you do emergency power testing --------- Correct Answer --------- Monthly
What is the responsibility of AB29 certificate of fitness holder --------- Correct Answer ---- ----- Inspect the battery system
An engineer observes a gauge to read saturation pressure of refrigerant if chilled water circulated as the cooling medium this reading best be used to estimate the --------- Correct Answer --------- Temperature of the chilled water being pumped to the spaces being cooled
Regardless of the ASHRAE refrigeration classification in use in the event of a refrigerant escape the engineer should be aware of --------- Correct Answer --------- asphyxiation
When is a chemical fire extinguisher and system needed --------- Correct Answer --------- Where water is not sufficient
What type of refrigerants found inside the machines gages --------- Correct Answer ------- -- Same type as the refrigerant inside the machine
Fireproof decorations in buildings are used for --------- Correct Answer --------- They don't catch fire in an emergency
Water regulating valves are used for --------- Correct Answer --------- Maintain condenser pressure To a pre determined level
How long does it take to warm up a steam turbine --------- Correct Answer --------- 10 to 15 minutes
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Why is a pressure relief out better than a fusible plugs --------- Correct Answer --------- Minimize refrigerant los
You are performing hot work near a sprinkler head what can you do to prevent the fire alarm system from going off --------- Correct Answer --------- Put a non combustible barrier to protect the sprinkler
What type of sprinkler heads need inspecting --------- Correct Answer --------- Automatic
Filter driers remove --------- Correct Answer --------- Moisture and particles
You are the engineer running a 2000 t steam driven Turbine centrifugal rug fridge eration system supplying chilled water to a college campus with multiple buildings you are supplying 46ﾟ chilled water all the buildings are satisfied except one building what should you do --------- Correct Answer --------- Put in additional chilled water pump online
If 29.92 HG = 14.7 PSIA then 26" HG converts to what in PSIA --------- Correct Answer - -------- 12.77 (.491 is constant for HG)
What is the device used to measure the speed of a turbine --------- Correct Answer ------- -- Tachometer
The charge in TEV sensing bulb is --------- Correct Answer --------- Similar to the refrigerant in this system
The cooling medium for a cooling tower is --------- Correct Answer --------- Air
A technician has been asked to estimate the cost of operating a 5 horsepower motor because the plant is billed by energy consumed as kilowatt hours the technician will calculate the conversion the equivalent in energy of a 5 horse power motor operating for
- hours and kilowatt hours is closest to --------- Correct Answer --------- 33.6 (one
horsepower equals. 746)
The only refrigerant/temperature chart available to refrigerate engineer list the temperature in ﾟC if the chart indicates a Celsius temperature of 5ﾟ the equivalent In Fahrenheit is --------- Correct Answer --------- 41ﾟ (1.8 × 5)+ 32 equals)
How do you start a centrifugal chiller --------- Correct Answer --------- Start the chilled water pump then start the condenser water pump check oil start cooling tower start compressor
A circuit breaker has a similar function as what --------- Correct Answer --------- A fuse
A standpipe system will be out of service for 2 days how long should there be fire watch --------- Correct Answer --------- The entire time the standpipe is out of service
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