Flanges always have an even number of holes in graduations of _____.
a. two
b. four
c. six
d. eight
b. four
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What is the nominal pipe size of a schedule S40 pipe with an OD of 6.625 inches and an ID of 0.432?
A. 3 inches B. 4 inches C. 6 inches D. 8 inches
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Which of the following helps limit work interruptions and allows a mechanic to be more productive?
a. Good staging procedures b. Creating a raised work area c. Scheduling insulation material deliveries from vendors d. Storing all materials in an off-site storage area
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An alternating current motor's speed is determined by the frequency of the power supply only.
Answer the following statement true (T) or false (F)
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The derivative output will be the ____ polarity as the proportional output when the error is decreasing.
A. same B. opposite
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