Vacuum gauge Study guides, Class notes & Summaries

Backflow Prevention Practice Exam Questions and Answers 2024 Graded A. A backflow preventer creates a closed plumbing system that requires the installation of a(n) _____? A. Expansion tank B. Globe valve C. Pressure reducing valve D. Temperature and pressure relief valve E. Utility box key - ANSWER Expansion tank A barometric loop must be installed 35 ft (10.7 m) above the highest ____? A. Boiler B. Fixture outlet C. Gate valve D. Service connection E. Water meter - ANSWER Fixture ...

Cast iron fittings can be used in heating fuel systems? - Answer-False Tank vent shall terminate - Answer-Within 12 feet of the fill and visible from the fill Tanks exceeding 330 gallons must have - Answer-Top supply connection Fuel return piping from an appliance shall - Answer-Enter the top of the tank Oil appliances burning used oil shall only be installed - Answer-In commercial or industrial occupancies Technician must be present for filling of new oil tank - Answer-False A...

Z-51 Written Test (Tauris questions) The total amount of heat to be removed from the refrigerant equals the heat picked up in the: A) Evaporator less the heat given up in the muffler. B) Evaporator plus the head of included non-condensables. C) Evaporator plus the heat of compression. D) Evaporator. - CORRECT ANSWER C) Evaporator plus the heat of compression. Select the INCORRECT statement regarding requirements of commercial cooking exhaust systems A) Company servicing the system mys...

Generally, vibration eliminators in piping should be installed: A: At a 45 degree angle B: At a 90 degree angle C: Perpendicular to the compressor crankshaft D: Parallel to the compressor crankshaft - D: Parallel to the compressor crankshaft If you purchased ten filter-driers for $100.00, what was the price of each filter-drier? A: $100.00 B: $10.00 C: $1.00 D: $1.10 - B: $10.00 Which of the following jobs requires safety glasses? A: Driving a vehicle B: Extending a ladder C: Brazing D: Pulling ...

Generally, vibration eliminators in piping should be installed: A: At a 45 degree angle B: At a 90 degree angle C: Perpendicular to the compressor crankshaft D: Parallel to the compressor crankshaft - D: Parallel to the compressor crankshaft If you purchased ten filter-driers for $100.00, what was the price of each filter-drier? A: $100.00 B: $10.00 C: $1.00 D: $1.10 - B: $10.00 Which of the following jobs requires safety glasses? A: Driving a vehicle B: Extending a ladder C: Brazing D: Pulling ...

Z-51 Written Test (Tauris questions) The total amount of heat to be removed from the refrigerant equals the heat picked up in the: A) Evaporator less the heat given up in the muffler. B) Evaporator plus the head of included non-condensables. C) Evaporator plus the heat of compression. D) Evaporator. - CORRECT ANSWER C) Evaporator plus the heat of compression. Select the INCORRECT statement regarding requirements of commercial cooking exhaust systems A) Company servicing the system mys...

Pumper End of Course Questions and Answers 100% Solved A priming device works by: A. centripetal force B. creating a partial vacuum C. centrifugal force D. creating compression within a rotating chamber ️️CREATING a partial VACUUM The purpose of the gauge and flowmeter test is to: A. ensure that the fire apparatus is running at the same speed it was rated for when it was new B. check the overall condition of the engine C. check that the given discharge information is accurate wh...

overheating (low water) or thermal shock What is the maximum size of safety valve permitted on a heating boiler? - Answer-4 1/2 inches What is the function of a boiler vent? - Answer-It is used to vent air from the boiler when filling with water or warming the boiler, and to prevent vacuum from forming when taking the boiler offline. What is the function of low water fuel cut-off? - Answer-It shuts off the boiler burner in the event of a low water What is the function of the operatin...

Wet compression test If a piston ring is leaking, this type of test will indicate some compression. If a valve is burned, this type of test will make no difference and indicate the same readings Blue Smoke this means the engine is burning oil. Could be caused by worn piston rings White Exhaust Smoke caused by coolant leaking into one or more cylinders, such as when a head gasket goes bad Worn valve guides and vacuum readings this condition would cause the vacuum gauge ne...

A compression test shows that one cylinder is too low. A leakage test on that cylinder shows that there is excessive leakage. During the test, air could be heard coming from the tailpipe. Which of the following could be the cause? A. Broken piston rings B. Bad head gasket C. Bad exhaust gasket D. An exhaust valve not seating - ANSWER-The correct answer is D. If an exhaust valve is not seating, air will leak from the combustion chamber by way of the valve out to the tailpipe and make an audib...