One characteristic of aluminum conduit is that it _____.
a. requires more maintenance
b. is too thin to be threaded
c. does not require supplementary corrosion protection when used in concrete
d. is more resistant to wet environments
d. is more resistant to wet environments
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Which of the following is a typical step in the shutdown procedures for a steam turbine?
A. Adjust turbine speed. B. Close the inlet valve. C. Open the low-pressure steam valve slightly. D. Verify the lube oil and cooling water are in service.
Peptide hormones are
A) composed of chains of amino acids. B) released by the reproductive organs. C) derived from arachidonic acid. D) lipids. E) chemically related to cholesterol.
If an electric heater is rated at 15,000 W, and the voltage used is 240 V, what size breaker in amps would be required?
A) 140 B) 62.5 C) 50 D) 75
When using the left-hand generator rule, the center finger points to the direction of _____.
A. thrust B. flux C. current D. power