As the head increases, the fan will need ______ horsepower to deliver the required quantity of air against the system head or pressure:

When the velocity of the air in the duct reduces, the resulting velocity pressure difference gets converted to ______ pressure:

Air velocity in the ducts must be kept reasonably ________ to minimize the frictional losses:

Water vapor in the air creates its own vapor pressure

_____ temperature is registered with a regular thermometer

In _______, lower temperature can be offset with higher humidity

Generally air can hold ___ amount of water vapor

Removal of _____ lowers the air temperature

Refrigerated air–conditioning will ____:

The relative humidity of the air _____ as the temperature increases

The actual amount of water vapor that is contained in an air sample is expressed in:

Which of the following law states – “the total pressure of a gas mixture is the sum of the pressures of each gas in the mixture”

____ temperature is the sensible–heat level of air and is taken with an ordinary thermometer

The evaporator H coil is normally used in horizontal applications

Evaporator absorbs heat into the refrigeration system