Exam 15: Electric Heat

For health and comfort, a relative humidity of ____ percent is desirable.

Heat radiation is accomplished when the heat rays are transmitted through space.

____ heating is used for metal treatment and in some electric furnaces.

Conduction heating is a method by which heat is transferred through the air or a fluid.

____ heating is used for drying operations, food warming, and medical purposes.

The heat pump operates on a principle similar to a refrigerator.

____ utilizes the fact that current flowing through a material produces heat.

To provide a comfortable area, it is recommended to maintain a temperature of 68 degrees Fahrenheit (20 degrees Celsius) with a relative humidity of 15 percent.

To replace lost moisture in the air, a(n) ____ may be used.

For a baseboard resistance heater, the ____ functions as the operating control.

In resistance baseboard heating, both conduction and natural convection occur, along with a small amount of radiation .

The heat from a(n) _____ is transmitted primarily by radiation.

Arc heating is used in ____.

Dielectric heating is based on the principle of ____.

____ are similar to the electric furnace, but instead of having all the elements in one location, they are installed in the ducts for each specific area.