Hvac

HVAC JOURNEYMAN TEST EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+ Which type of air-conditioning system is most likely to leak refrigerant into a structure? A.direct B.indirect C.evaporative D.split. A.direct When mechanical equipment is located on a flat roof that is 8 foot above grade, how far from the roof edge must the equipment be located before a guard rail is not needed? A. Less than 6' B. 9' C. 4' D. More than 10' D. More than 10' A room that measures 10 x 20 x 8...

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HVAC JOURNEYMAN EXAM 2024 AND PRACTICE EXAM LATEST VERSION WITH 100 CORRECT QUESTIONS AND DETAILED ANSWERS ALREADY GRADED A+ HVAC JOURNEYMAN EXAM 2024 AND PRACTICE EXAM LATEST VERSION WITH 100 CORRECT QUESTIONS AND DETAILED ANSWERS ALREADY GRADED A+ HVAC JOURNEYMAN EXAM 2024 AND PRACTICE EXAM LATEST VERSION WITH 100 CORRECT QUESTIONS AND DETAILED ANSWERS ALREADY GRADED A+ HVAC JOURNEYMAN EXAM 2024 AND PRACTICE EXAM LATEST VERSION WITH 100 CORRECT QUESTIONS AND DETAILED ANSWERS ALREADY GRADED ...

HVAC Equipment Practice Exam Questions With Correct Answers 2023

Rate of Cooling: Want to cool 11,000 CFM of Air. V = 13.8. What is the rate of cooling? 11,000/13.8 = 797.1 lb/min Heat Transfer, Water: The flow through a hot water heat exchanger is 15 gpm, EWT is 160 and LWT is 140. What is Q? Q = (500)(15)(160-140) = 150,000 BTUH 01:06 01:31 Heat Transfer, Air: 2,000 CFM, EAT is 72, LAT is 55. What is Q? Q = (1.1)(2,000)(72-55) = 37,400 BTUH Infiltration: Building built in 1971, size is 100' x 250' with 12' ceiling heights. Wha...

When using a low voltage T-stat for heating and cooling, when would there be a jumper between Rh and Rc? Select one: a. When using a single transformer system b. When heating with an oil boiler c. When heating with a gas boiler d. When using a two transformer system A) When Using a single transformer system Digital thermostats usually display temperature, time of day, programming and operating status. Select one: True False True 00:53 01:31 With the fan switch in th...

Explain how carbon monoxide is formed. Carbon monoxide (CO) is a byproduct of incomplete combustion List agencies that perform testing to verify equipment performance. AHRI, CSA International, and Underwriters Laboratories (UL) 00:28 01:31 What is the purpose of excess air in furnace combustion? Insufficient combustion air can produce hazardous conditions, if too little oxygen is supplied, part of the byproducts will be dangerous carbon monoxide gas rather than harmless ca...

Sealing up even small openings in a building conserves energy because... it stops the infiltration of outside air or ex-filtration of comfortable conditioned inside air by way of convection currents Heat is easily transferred through windows and chimneys and not easily through insulation True 01:13 01:31 Which of the following items would not be a part of a gas furnace forced air perimeter heating system? Boiler In a forced air heating system, a(n)... is a system of d...