Which current would cause the contacts of a current relay to close? Why?
What will be an ideal response?
Locked-rotor amps (LRA). This current creates a strong magnetic field in the current relay and causes the contacts to close. The locked-rotor amperage "tells" the current relay that the motor is trying to start.
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How are dimmers used to control lighting?
What will be an ideal response?
A ____ fitting is a standard or custom duct component that connects one duct size to a different duct size, or one duct shape to a different duct shape, or connects both different shapes and sizes.
A. transition B. transmission C. reduction D. variation
Most occupants will normally operate their system at about ____ °F.
A. 68 B. 72 C. 75 D. 80
Which of the following loads does not require a grounded circuit conductor?
a. Two wires, 120 volt b. Three wires, 120/240 volt c. Two wires, 240 volt d. None of the above