Three common types of antifreeze are salts, glycols, and ____________________.
Fill in the blank(s) with the appropriate word(s).
alcohols
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Why is three-phase power more efficient than single-phase power?
What will be an ideal response?
The ____________________ creates much less pressure drop through the valve than the globe valve and is a much better application where excess pressure drop is a concern.
Fill in the blank(s) with the appropriate word(s).
How does a two-step scroll compressor achieve capacity reduction?
A) The orbiting scroll only completes half-orbits in low-capacity operation. B) The orbiting scroll turns clockwise for reduced capacity and counterclockwise for full capacity. C) An internal rotating plate opens and closes two drilled ports in the scroll. D) Only one scroll is used during low-capacity operation, while both are used for full-capacity operation.
Resistance is defined as the opposition to current flow and is measured in:?
A. ?Volts B. Resistance C. ?Ampere's D. Ohm's