Exam 15: Electric Heat

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

Arc heating is used in ____.

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.

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

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

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

Dielectric heating is based on the principle of ____.

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

Conduction heating is a method by which heat is transferred from one object to another through the air or some other fluid.

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

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

A(n) ____ can heat an area during cold weather and can cool the area during warm weather.

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

____ 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.

The heat pump is the most efficient type of electric heat.