For the Y-Y circuit of Fig. 12.41, find the line currents, the line\ voltages, and the load voltages.


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What is the maximum measuring range of a metric micrometer?

A. 250 mm B. 100 mm C. 25 mm D. 10 mm

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Some air brake systems have an alcohol evaporator. What may happen if you don't keep the unit filled with alcohol?

A. Ice may from on the brake drums and wear them out. B. The S-cam may not take back when you release the brake pedal C. Ice may form in the air brake tanks and cause brake failure.

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HVACR technicians must be certified by:

A) The American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE). B) An Environmental Protection Agency (EPA) certified testing organization. C) The Air Conditioning, Heating, and Refrigeration Institute (AHRI). D) The American Society of Heating, Refrigeration, and Air.

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The electrician uses the following amounts of 1-inch EMT conduit: 22.5 feet, 8 feet, 30.25 feet, and 816.75 feet. Find the total amount of EMT used.

Fill in the blank(s) with the appropriate word(s).

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