Most modern motor-compressor assemblies turn at ____ rpm.
A. 1,275
B. 3,450
C. 4,800
D. 6,000
Answer: B
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In a standard starter, before change is made from a higher to a lower speed, ____.
a. the overload relay must be reset b. the contacts must be reclosed c. the stop button must be pressed d. the motor must be reversed
Two kilograms of carbon dioxide expand in a cylinder at a constant temperature of 24ºC from a pressure of 800 kPa to 100 kPa. Assuming a quasi-equilibrium process, the required heat transfer is nearest:
A) 401 kJ B) 354 kJ C) 267 kJ D) 233 kJ
____________________ is uncultivated areas used for livestock grazing, particularly in the western
United States. It is particularly important because it occupies such a large proportion of land surface and provides food and important wildlife habitat.
Fill in the blank(s) with the appropriate word(s).