The wiring and connectors that carry the power to a motor must be in good condition. When a connection becomes loose, oxidation of the copper wire occurs. The oxidation ____.
A. has no effect on the electrical connection
B. acts as an electrical resistance and causes the connection to heat more
C. decreases the resistance
D. none of the above
Answer: B
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A hot air system and/or hand tool are types of equipment that can be very good on boards and components when properly applied, especially for ____________________ materials.
Fill in the blank(s) with the appropriate word(s).
Follow the steps of the Systematic Approach of Section 14.4—that is, (1) identify the system, (2) determine whether the process is batch or rate, (3) construct a schematic diagram with inputs and outputs, (4) Label known material quantities or rates of flow and so on. A process requires two distillation columns. The first column is fed a solution containing 23 percent component A, 29 percent component B, the rest component C. The product amount is one-third of the feed amount and contains 61 percent A, 5 percent B, the rest C. The bottoms amount is fed to a second column which then produces a product of 15 percent A, 79 percent B, the rest C. The waste from the second column contains 0.50 percent A, the rest B and C. If 3 300 lb of solution is fed to the first column, determine the
unknown compositions and amounts of the feed to and the product and waste from the second column. What will be an ideal response?
Which of the following was NOT among the regional groups that formed the solid political base of the Republican party in the late 19th century?
A. immigrants living in the large Northeastern cities. B. Union Civil War veterans of the Grand Army of the Republic. C. Southern black freedmen D. Midwestern farmers and small merchants. E. rural and small-town Northeast residents.
A style C arbor is used to hold and drive:
A) Ball end mills B) Large face mills C) Shell end mills D) All of the above