FDNY Z51 Study Guide 2024 Exam
Questions All Correctly Solved
1. AB29 Certificate of Fitness Holder's Responsibility - ANSWER-The holder ought to
inspect the battery gadget.
2. AB29 Certificate of Fitness Holder's Responsibility - ANSWER-The holder ought to
look at the battery gadget.
3. Acceptable Circumstances for Chaining and Exiting - ANSWER-It is never k to chain
and exit.
4. Acceptable Circumstances for Chaining and Exiting - ANSWER-It is in no way k to
chain and exit.
5. Action for Unsatisfied Building in Chilled Water System - ANSWER-If one constructing
isn't happy, put in a further chilled water pump on line.
6. Action for Unsatisfied Building in Chilled Water System - ANSWER-If one constructing
isn't happy, installed a further chilled water pump online.
7. Advantage of Shell and Tube Condenser - ANSWER-The foremost advantage of a
shell and tube condenser is that there is much less danger of growing leaks.
8. Advantage of Shell and Tube Condenser - ANSWER-The main gain of a shell and
tube condenser is that there's much less hazard of developing leaks.
9. ASHRAE Refrigerant Safety Classification - ANSWER-The most poisonous ASHRAE
refrigerant safety category is b3, and the maximum flammable is a3.
10.ASHRAE Refrigerant Safety Classification - ANSWER-The maximum toxic ASHRAE
refrigerant protection category is b3, and the most flammable is a3.
11.Atmospheric Pressure Ratio Calculation - ANSWER-If the suction pressure is 3 psig
and the release is 10 psi, with the atmospheric strain at 14.7, the ratio closest to at
least one.39.
12.Atmospheric Pressure Ratio Calculation - ANSWER-If the suction pressure is 3 psig
and the release is 10 psi, with the atmospheric pressure at 14.7, the ratio closest
to at least one.39.
13.Automatic Expansion Valve Function - ANSWER-An computerized enlargement valve
continues a constant evaporator stress.
14.Automatic Expansion Valve Function - ANSWER-An automatic growth valve
maintains a consistent evaporator pressure.
15.BTU Removal in 30 Ton System - ANSWER-360,000 BTUs are removed in a 30 ton
system consistent with hour.
16.BTU Removal in 30 Ton System - ANSWER-360,000 BTUs are removed in a 30 ton
gadget in step with hour.
17.Cause of Condenser Pump Cavitation - ANSWER-If a refrigerant engineer verifies
that a condenser pump is cavitated, the maximum probably cause for this
circumstance is a faulty cooling tower water stage controller.
, 18.Cause of Condenser Pump Cavitation - ANSWER-If a refrigerant engineer verifies
that a condenser pump is cavitated, the most likely purpose for this circumstance
is a defective cooling tower water level controller.
19.Centrifugal Chiller Start-up Procedure - ANSWER-Start the chilled water pump, then
start the condenser water pump, test oil, begin cooling tower, and start
compressor.
20.Centrifugal Chiller Start-up Procedure - ANSWER-Start the chilled water pump, then
start the condenser water pump, check oil, start cooling tower, and begin
compressor.
21.Centrifugal Compressor Capacity Control - ANSWER-The number one way of
attaining capacity manipulate of a centrifugal compressor is via adjustment to the
inlet impeller pre-rotation vanes.
22.Centrifugal Compressor Capacity Control - ANSWER-The primary manner of
achieving ability manipulate of a centrifugal compressor is via adjustment to the
inlet impeller pre-rotation vanes.
23.Charge in TEV Sensing Bulb - ANSWER-The rate in TEV sensing bulb is much like
the refrigerant in this machine.
24.Charge in TEV Sensing Bulb - ANSWER-The fee in TEV sensing bulb is similar to
the refrigerant on this machine.
25.Chemical Fire Extinguisher and System Requirement - ANSWER-A chemical fireplace
extinguisher and machine are needed where water isn't always sufficient.
26.Chemical Fire Extinguisher and System Requirement - ANSWER-A chemical fireplace
extinguisher and system are wished in which water isn't sufficient.
27.Circuit Breaker Function - ANSWER-A circuit breaker has a similar characteristic as
a fuse.
28.Circuit Breaker Function - ANSWER-A circuit breaker has a comparable function as
a fuse.
29.Cooling Medium for Indirect Refrigeration System - ANSWER-In an indirect
refrigeration machine, glycol or any brine answer might not be used as a cooling
medium for constructing areas being cooled.
30.Cooling Medium for Indirect Refrigeration System - ANSWER-In an indirect
refrigeration system, glycol or any brine solution would not be used as a
cooling medium for constructing spaces being cooled.
31.Cooling Tower Cooling Medium - ANSWER-The cooling medium for a cooling tower
is water
32.Cooling Tower Cooling Medium - ANSWER-The cooling medium for a cooling tower
is water
33.Cost Calculation for Operating a 5 Horsepower Motor - ANSWER-The equivalent
electricity intake of a five horsepower motor running for 9 hours is 33.6 kilowatt
hours.
34.Cost Calculation for Operating a five Horsepower Motor - ANSWER-The equal power
intake of a five horsepower motor operating for 9 hours is 33.6 kilowatt hours.
35.Device for Controlling Steam Turbine Speed - ANSWER-The device that robotically
controls the speed of a steam turbine is the governor valve.
Questions All Correctly Solved
1. AB29 Certificate of Fitness Holder's Responsibility - ANSWER-The holder ought to
inspect the battery gadget.
2. AB29 Certificate of Fitness Holder's Responsibility - ANSWER-The holder ought to
look at the battery gadget.
3. Acceptable Circumstances for Chaining and Exiting - ANSWER-It is never k to chain
and exit.
4. Acceptable Circumstances for Chaining and Exiting - ANSWER-It is in no way k to
chain and exit.
5. Action for Unsatisfied Building in Chilled Water System - ANSWER-If one constructing
isn't happy, put in a further chilled water pump on line.
6. Action for Unsatisfied Building in Chilled Water System - ANSWER-If one constructing
isn't happy, installed a further chilled water pump online.
7. Advantage of Shell and Tube Condenser - ANSWER-The foremost advantage of a
shell and tube condenser is that there is much less danger of growing leaks.
8. Advantage of Shell and Tube Condenser - ANSWER-The main gain of a shell and
tube condenser is that there's much less hazard of developing leaks.
9. ASHRAE Refrigerant Safety Classification - ANSWER-The most poisonous ASHRAE
refrigerant safety category is b3, and the maximum flammable is a3.
10.ASHRAE Refrigerant Safety Classification - ANSWER-The maximum toxic ASHRAE
refrigerant protection category is b3, and the most flammable is a3.
11.Atmospheric Pressure Ratio Calculation - ANSWER-If the suction pressure is 3 psig
and the release is 10 psi, with the atmospheric strain at 14.7, the ratio closest to at
least one.39.
12.Atmospheric Pressure Ratio Calculation - ANSWER-If the suction pressure is 3 psig
and the release is 10 psi, with the atmospheric pressure at 14.7, the ratio closest
to at least one.39.
13.Automatic Expansion Valve Function - ANSWER-An computerized enlargement valve
continues a constant evaporator stress.
14.Automatic Expansion Valve Function - ANSWER-An automatic growth valve
maintains a consistent evaporator pressure.
15.BTU Removal in 30 Ton System - ANSWER-360,000 BTUs are removed in a 30 ton
system consistent with hour.
16.BTU Removal in 30 Ton System - ANSWER-360,000 BTUs are removed in a 30 ton
gadget in step with hour.
17.Cause of Condenser Pump Cavitation - ANSWER-If a refrigerant engineer verifies
that a condenser pump is cavitated, the maximum probably cause for this
circumstance is a faulty cooling tower water stage controller.
, 18.Cause of Condenser Pump Cavitation - ANSWER-If a refrigerant engineer verifies
that a condenser pump is cavitated, the most likely purpose for this circumstance
is a defective cooling tower water level controller.
19.Centrifugal Chiller Start-up Procedure - ANSWER-Start the chilled water pump, then
start the condenser water pump, test oil, begin cooling tower, and start
compressor.
20.Centrifugal Chiller Start-up Procedure - ANSWER-Start the chilled water pump, then
start the condenser water pump, check oil, start cooling tower, and begin
compressor.
21.Centrifugal Compressor Capacity Control - ANSWER-The number one way of
attaining capacity manipulate of a centrifugal compressor is via adjustment to the
inlet impeller pre-rotation vanes.
22.Centrifugal Compressor Capacity Control - ANSWER-The primary manner of
achieving ability manipulate of a centrifugal compressor is via adjustment to the
inlet impeller pre-rotation vanes.
23.Charge in TEV Sensing Bulb - ANSWER-The rate in TEV sensing bulb is much like
the refrigerant in this machine.
24.Charge in TEV Sensing Bulb - ANSWER-The fee in TEV sensing bulb is similar to
the refrigerant on this machine.
25.Chemical Fire Extinguisher and System Requirement - ANSWER-A chemical fireplace
extinguisher and machine are needed where water isn't always sufficient.
26.Chemical Fire Extinguisher and System Requirement - ANSWER-A chemical fireplace
extinguisher and system are wished in which water isn't sufficient.
27.Circuit Breaker Function - ANSWER-A circuit breaker has a similar characteristic as
a fuse.
28.Circuit Breaker Function - ANSWER-A circuit breaker has a comparable function as
a fuse.
29.Cooling Medium for Indirect Refrigeration System - ANSWER-In an indirect
refrigeration machine, glycol or any brine answer might not be used as a cooling
medium for constructing areas being cooled.
30.Cooling Medium for Indirect Refrigeration System - ANSWER-In an indirect
refrigeration system, glycol or any brine solution would not be used as a
cooling medium for constructing spaces being cooled.
31.Cooling Tower Cooling Medium - ANSWER-The cooling medium for a cooling tower
is water
32.Cooling Tower Cooling Medium - ANSWER-The cooling medium for a cooling tower
is water
33.Cost Calculation for Operating a 5 Horsepower Motor - ANSWER-The equivalent
electricity intake of a five horsepower motor running for 9 hours is 33.6 kilowatt
hours.
34.Cost Calculation for Operating a five Horsepower Motor - ANSWER-The equal power
intake of a five horsepower motor operating for 9 hours is 33.6 kilowatt hours.
35.Device for Controlling Steam Turbine Speed - ANSWER-The device that robotically
controls the speed of a steam turbine is the governor valve.
