What is the lowest percentage of full capacity that a digital scroll can be safely operated for extended periods?
A) The digital scroll compressor can only operate at full capacity.
B) The compressor can be operated at 0% by simply leaving the unloading solenoid energized.
C) The digital scroll compressor cannot be operated below 50% capacity.
D) The minimum capacity is 10% to ensure that the compressor gets proper lubrication.
D
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Which of the following systems is the most likely to be affected significantly by harmonics?
a. Three-phase, four-wire systems with nonlinear loads connected to 120V circuits b. Single-phase, three-wire systems with some loads connected to 120V circuits c. Three-phase, three-wire systems with no 120V loads d. Three-phase, four-wire systems with no 120V loads
Approximately 90% of raw feathers and down are imported. Which of the following countries supplies feathers and down to the United States?
A) Canada B) Brazil C) Switzerland D) Costa Rica
Determine the final ratio of the following: Drive pulley has a diameter of 158 mm; driven pulley is 87 mm.
Fill in the blank(s) with the appropriate word(s).
If the fixed cost to produce an item is $500, labor is $2.00 per unit and materials are $2.50 per unit, then the unit cost for an order of 1,000 would be:
A) $5,000. B) $504.50. C) $6.50. D) $5.00.