BOMA-HVAC EXAMS BUNDLE

What happens when room temperature soda is poured into a glass of ice ? - Answer-The ice melts because it is absorbing heat from the soda . The compressor in a refrigeration system - Answer-pumps the refrigerant throughout the system To control ice build - up on a heat pump outdoor coil in the...

1. How may fittings be attached to a high pressure boiler? - Answer-Threaded, Certified welds, Flanges Which test determines the relieving capacity of safety valves - Answer-Accumulation test Flue gasses can leave at high temperatures. We can recover some of this heat using a(n): - Answer-Econ...

The man whose work is considered the real beginning of the science of air-conditioning _____. - Answer-Willis Carrier Psychrometry refers to the relationship between _____ and _____. - Answer-Humidity; air The amount of moisture in the air compared to how much it can hold is _____. - Answer-Re...

How may fittings be attached to a high pressure boiler? a. threaded b. certified welds c. flanges d. any of the above - Answer-d. any of the above Which test determines the relieving capacity of safety valves? a. hydrostatic test b. accumulation test c. orsat test ration test - Answer-b. ...

Usually if a motor in a system feels hot and you think it is overloading you should not open the flow valve further because? - Answer-Increase in flow will usually increase the horsepower requirements. Net positive suction head is? - Answer-The amount of absolute pressure actually available at th...

When Starting a centrifugal pump That is part of a manifold with no check valves - Answer-You should open the suction valve, start the pump and open the discharge valve slowly Curb cock - Answer-A Valve insert it in a water line between the corporation stop and the water meter is generally called...

Usually if a motor in a system feels hot and you think it is overloading you should not open the flow valve further because? - Answer-Increase in flow will usually increase the horsepower requirements. Net positive suction head is? - Answer-The amount of absolute pressure actually available at th...

laminar flow - Answer-- A streamline or viscous flow. - layers of water flowing over one another at different speeds with virtually no mixing between layers. - Fluid particles move in definite and observable paths or stream lines. - The flow is characteristic of viscous (thick) fluid or is one in...

How does a U.P.S. (uninterruptable power supply) work? AC rectified to DC batteries then inverted to AC Batteries energy capacity is measured in Amp-hours 6 Ways to Show Appreciation for Your Child's Teacher Batteries have two rated values: Voltage and Amp-hours How do you top off water in a...

Dual Duct System - Answer-A system in which hot air and cold air are supplied by separate ducts and mixed at each controlled space to provide the desired supply air temperature. This method consumes a great deal of energy. Muiltizone System - Answer-an a/c system in which the zone control is obta...