As it sets up, grout _____, thus filling voids under the bases and bedplates.
a. contracts
b. expands
c. shrinks
d. settles
b. expands
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Which of the following statements is TRUE regarding a brazing project on a 3/16 in pipe with a 3 tip, the acetylene and oxygen regulators set at 7 psig, and that begins with heating the pipe first?
A) The oxygen regulator should be below 6 psig. B) The pipe should not be heated first while brazing. C) The acetylene regulator should be below 6 psig. D) The tip size is incorrect for a 3/16 in pipe.
The starting torque of a split-phase induction motor is maximum when the current through the start and run coils are __________ degrees apart.
A. 0 B. 45 C. 90 D. 180
What is tropospheric ozone and why are we not concerned with protecting it?
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