Fdny z 51 refrigeration - Study guides, Class notes & Summaries

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 engin...

Z-51 Written Test Questions and Answers (100% Correct) Answers 2023/2024 Grade A+. In a steam turbine, what is the function of a Kingsbury thrust bearing? A) Maintain first stage steam pressure. B) Compensate for coupling misalignment. C) Adjust shaft torque at start up. D) Maintain axial positioning of the rotor shaft.: correct answer- D) Maintain axial positioning of the rotor shaft. 2. The ratio of actual pressure of water pressure in the atmosphere to the saturated pressure of given t...

FDNY Z-51- REFRIGERATION LUBRICANTS EXAM QUESTION AND VERIFIED ANSWERS LATEST UPDATE compressor lubrication - ANSWER an adequate supply of oil must be maintained in the crankcase of a refrigeration compressor at all time to ensure continuous circulate properly through a system with refrigerant - ANSWER refrigeration lubricants must have certain properties in order to be able to flow in low temps, withstand high temps and remain harmless to refrigerants and equipment, travel fre...

Z-51 Written Test Questions and Answers Latest 2023/2024 (Grade 100%). In a steam turbine, what is the function of a Kingsbury thrust bearing? A) Maintain first stage steam pressure. B) Compensate for coupling misalignment. C) Adjust shaft torque at start up. D) Maintain axial positioning of the rotor shaft.: correct answer- D) Maintain axial positioning of the rotor shaft. 2. The ratio of actual pressure of water pressure in the atmosphere to the saturated pressure of given temperature i...

Z-51 Written Test Questions With 100% Correct Answers Latest 2024 (Grade A+) In a steam turbine, what is the function of a Kingsbury thrust bearing? A) Maintain first stage steam pressure. B) Compensate for coupling misalignment. C) Adjust shaft torque at start up. D) Maintain axial positioning of the rotor shaft.: correct answer- D) Maintain axial positioning of the rotor shaft. 2. The ratio of actual pressure of water pressure in the atmosphere to the saturated pressure of given tempera...

FDNY Z-51- Refrigeration Engineer TEST Q&A 1. which of the following are reference document commonly used by ref engineers in us - ANSWER national fire protection 2. water and moisture is a serious problem in a refrigeration system water can be kept out of the system. - ANSWER proper evacuation after charging the system 3. the pressure drop through the condenser is directly proportional to the square of the water velocity. at the flow rate the condenser water pressure drop is 40 psi. ...

Z-51, 140 Exam Questions and Complete Solutions A refrigerant engineer verifies that a chilled water pump is cavitating. of the following the most likely cause for this condition is: - Answer: Water leaks through the mechanical seals There is a decrease in the efficiency of a reciprocating compressor. this most likely caused by: - Answer: Leaking suction valve The suction and discharge valve of the reciprocating compressor are mounted as follows: - Answer: Discharge valves on top of the...

Z-51 Written Test questions and answers 100% guaranteed success. In a steam turbine, what is the function of a Kingsbury thrust bearing? A) Maintain first stage steam pressure. B) Compensate for coupling misalignment. C) Adjust shaft torque at start up. D) Maintain axial positioning of the rotor shaft. - correct answers.D) Maintain axial positioning of the rotor shaft. The ratio of actual pressure of water pressure in the atmosphere to the saturated pressure of give...