Electrical conductors may be installed in _____.
a. ducts or plenums used for environmental air
b. nonmetallic cable trays in corrosive areas
c. hoistways
d. nonmetallic raceways that contain steam or drainage pipes
b. nonmetallic cable trays in corrosive areas
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These lines are used to show and locate the centers of circles and arcs.
a. object lines b. centerlines c. hidden lines d. extension lines
A semiconductor can function as either a conductor or an insulator.
Answer the following statement true (T) or false (F)
An isothermal process is a process that does not change:
A) The state of the refrigerant. B) The temperature of the refrigerant. C) The volume of the refrigerant. D) The pressure of the refrigerant.
If the resistance against a propeller fan is doubled, the cfm output decreases, but the amperage draw of the motor ____.
A. decreases B. increases C. stays the same D. overheats the motor