What causes combustion - Study guides, Class notes & Summaries

How do you determine if a boiler has sufficient safety valve capacity - Answer-The accumulation test determines if the valve will discharge all the steam pressure, without allowing the pressure to rise more than 6% more than valve setpoint If a safety valve opens at 100 psi, what pressure should it close at? What requirements governors safety valve blowdowns? - Answer-A: 96-98 psi, with no chatter, with a blowdown of no more than 4 psi of set pressure. A safety valve is limited to how many...

TCFP Fire Investigator Questions and Answers Is NFPA 921 a guide or a standard? It is the Guide for Fire and Explosion Investigations What are the six steps of the scientific method? Recognize the need Define the problem Collect the data Analyze the data Develop a hypothesis Test the hypothesis What step of the scientific method is inductive reasoning? Analyze the data What step of the scientific method is deductive reasoning? Test the hypothesis What are the four parts of the fire tetrahedr...

Fire Academy Week 2 Tests Which of the following best describes how understanding the physical science of fire can help firefighters? A. It keeps radiant heat from igniting fuel B. It keeps flaming combustion from beginning C. It translates into practical knowledge of fire behavior D. It helps in stopping rapid fire behavior from developing - C When a substance changes from one type of matter to another it has had a: A. Chemical shift B. Physical change C. Chemical reaction D. Phy...

Oil Burner License Exam Questions and Answers, Latest Updated 2024/2025 (Verified Answers) What is the best long term solution for preventing a clogged nozzle? - Answer- -Remove any underground storage tanks. -Install a quality oil filter. -Cut the suction line 10" above the tank outlet to prevent sludge. Hot water and steam valves are interchangeable. - Answer- False When in the presence of a flame, a cad cell normally reads.. - Answer- 300-1000 ohms If a pump is used to bring oil to a l...

1. Reciprocating Engines Oral (2-26) How are conventional reciprocating engine classified? They are classified by cylinder arrangement(v-type, in-line, radial, and opposed), or method of cooling (liquid cooled, or air cooled). Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen What are the different types of piston rings? Compression rings, Oil control rings, and Scraper rings. What are the main c...

Where are the return openings located regarding air distribution systems? Return air openings are located on inner walls. The minimum temperature of the water used in a hydrostatic test of a boiler cannot be less than what temperature? 20 degrees Celsius Which of the following are causes of pressure explosions? 1. effects of corrosion 2. weak pilot flame 3. stressed material due to heating too quickly 4. insufficient purge5. scale and sludge build-up 1, 3, 5 Carbon, which is not combine...

IAAI CFI Exam Questions With Verified Answers Latest Update 2024/2025 | Scored A+. A liquid with a flash point ABOVE 100F - correct answers Combustible Liquid If the current flowing out from an electrical panel is 12.5 amps, and it then flows through an electrical load of 1500 watts, what is the amperage of the remaining current flow of the return circuit? - correct answers 12.5 If a hair dryer draws 8.3amps (in a home with 120-volt service), what is the wattage? *Power (P) = current (I) ...

IAAI CFI 250+ QUESTIONS AND ANSWERS COMPILED NEW GEN VERIFIED AND SOLVED 100% FOR THE IAAI CFI CERTIFICATION TEST A liquid with a flash point ABOVE 100F Ans- Combustible Liquid If the current flowing out from an electrical panel is 12.5 amps, and it then flows through an electrical load of 1500 watts, what is the amperage of the remaining current flow of the return circuit? Ans- 12.5 If a hair dryer draws 8.3amps (in a home with 120-volt service), what is the wattage? *Power (P)...

FDNY COF P-98 Exam With 100% Correct Answers Latest Updated 2024 (Already Graded!!) Where generally *Fuel-oil is used in buildings?* What purposes?* - Correct AnswerIs used in *Stationary Equipments*, Two purposes: a) *Fuel Emergency Generators* b) *Fuel Equipment used to heat the building* 2.- What *COF is required* to supervise the *Fuel-oil transfer in the building from one floor to another?* - Correct Answer-*P-98 and maintain all qualifications and comply w/ requirements applicable to...

P98 Exam Questions With 100% Correct Answers, Latest Updated 2024/2025 (GRADED A+) Fuel-oil is generally used in buildings in stationary equipment for two purposes - Correct Answer-fuel emergency generators or to fuel equipment used to heat the building. the person supervising the Fuel-Oil Transfer in the Building from one floor to another must hold - Correct Answer-P-98 Certificate of Fitness. Certificate of Fitness holders must maintain all qualifications and comply with all requirements a...