When a submersible pump is used in a metal well casing, the well casing is required to be bonded to
A. the pump circuit equipment grounding conductor.
B. the pump circuit equipment grounding conductor only if the water pipe is nonmetallic.
C. the grounding electrode conductor.
D. the metal water pipe from the pump to the building.
A. the pump circuit equipment grounding conductor.
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Which of the following is a true statement about the Peng-Robinson parameters a andb?
A. The b variable is ultimately a function of universal physical constants and so has the same value for all compounds. B. The a variable can have units of L•J/kmol•mol C. The a variable is calculated by 27/64 (R^2 T_c^2)/P^2 D. The b variable has dimensions of amount of substance per length to the third power. E. None of these statements are true.
A motor has four leads out of it: two red and two black. The resistance between the red leads is 3 ohms. The resistance between the black leads is 5 ohms. The black leads are connected to the ____________________ winding.
Fill in the blank(s) with the appropriate word(s).
In applications such as an automobile drive shaft or simply spinning on a single rope swing seat, the structural element is under torsion.
Answer the following statement true (T) or false (F)
What could cause ice to build up and bridge downward over the freezing cells?
What will be an ideal response?