Which of the following influences cause a controlled variable to change?
A. a disturbance appears
B. a load demand varies
C. the set point is adjusted
D. all of the above
Answer: D
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Which tier of emission standards is the least stringent?
A) Tier 1 B) Tier 2 C) Tier 3 D) None of these
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What are the chemical components of HFC refrigerant?
What will be an ideal response?
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The characteristic of a bang-bang position servo is ____________________ (slow, fast) speed and ____________________ (poor, high) accuracy.
Fill in the blank(s) with the appropriate word(s).
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Holes for taper pins are usually prepared by ____.
A. drilling B. broaching C. milling D. reaming
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