HVAC

Of the following choices, the warmest temperature is

• a.

  20°C

• b.

  303°K

• c..

  77°F

• d. 450R

Temperature can be thought of as ____.

• a.

  the amount of heat in a material

• b.

  the density of the material

• c.

  latent heat

• d.

  the weight of the total mass of the material

The Celsius equivalent of 80°F is

• a.

  25.5°C

• b.

  29.0 C

• c.

  26.7°C

• d.

  27.5°C

The amount of heat needed to change the temperature of a substance will vary with the type of substance. This heat quality is called the ____ of the substance.

• a.

  sensible heat.

• b.

  specific heat

• c.

  latent heat

•  

  d.

  relative heat

   

The standard atmospheric pressure at sea level is ____.

 

• a.

  29.60" Hg

• b.

  29.71" Hg

• c.

  29.83" Hg

• d. 29.92 " Hg

. Which of the following represents a different temperature than the other three?

• a.

  15°C

• b.

  59°F

• c.

  475°K

• d.

  519°R

What happens when room temperature soda is poured into a glass of ice?

• a.

  The ice gets colder.

• b.

  The ice melts because it is giving up the "cold" to the soda.

• c.

  The ice melts because it is absorbing heat from the soda.

• d.

  The ice melts because the soda is colder than the ice.

. High temperature refrigeration is that produced by ____.

• a.

  heat from a furnace

• b

  an air conditioning system.

• c.

  The stove

• d.

  The freezer section of a refrigerator

The two common temperature scales used by air conditioning and refrigeration technicians are called ____________________ and ____________________.

The evaporator is on the

• a.

  High side of the system

• b.

  At the bottom of the unit

• c.

  Outside the house

• d.

  On the low side of the system