Senoir Sewage Treatment Worker Study Guide Graded A+

A rasp is a {Ans: type of coarse file}7) Where pump ball bearing may be subjected to water washing, the lubricating grease should have a A. white lead base B. red lead base C. sodium soap base D. lithium soap base {Ans: lithium soap base}8) The MAIN reason for enclosing switches and other current-carrying parts electrical systems is to A. exclude dirt and moisture B. protect workers form shock C. increase the capacity of the equipment D. prevent damage tot he equipment {Ans: protect workers form shock}46) Suppose a centrifugal pump is pumping less sewage than it is capable of handling. Of the following, the one that is not a possible reason for this is that the A. speed of the pump is too slow B. pump is not properly primed C. stuffing box packing is defective D. suction line is partly clogged {Ans: pump is not properly primed}40) Soft jaw inserts sometimes used to protect the surface of a piece of metal that is held in a vise are MOST frequently made of A. zinc B. tin C. brass D. pewter {Ans: brass}12) Chlorine leaks are BEST detected by the use of A. orthotoludin