What happens when overexcitation takes place?
What will be an ideal response?
In this condition, the DC excitation current overmagnetizes the iron of the motor and part of the AC line current is used to de-magnetize the iron. The de-magnetizing process causes the AC line current to lead the voltage in the same manner as a capacitor.
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What is true about a SNAP refrigerant?
A) All original refrigerants must be removed before charging with the new refrigerant. B) Each refrigerant must have a label with a unique color that specifies pertinent information. C) Requires unique set of fittings, and all ports not converted must be permanently disabled. D) All of the above
How is hardwood graded?
What will be an ideal response?
The first tier LEED accreditation examination is called:
A. LEED Green Associate B. LEED Accreditation Professional C. Green Contractor D. Green Energy Associate
Refrigeration refers to space temperatures:
A) Below 60°F. B) Below 32°F. C) Below 0°F. D) Below 40°F.