Explain when the compressor's lubrication system is fully effective.
What will be an ideal response?
There is no pressure lubrication when the compressor first starts. The compressor must be running up to speed before the lubrication system is fully effective.
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Which type of fuse should be used to prevent nuisance tripping from temporary motor overloads and surge currents?
a. Non-time-delay fuse b. Edison-base plug fuse c. GE-base single-element fuse d. Dual-element, time-delay fuse
Measuring a drawing with an architect's or engineer's scale ____.
A. makes precision easier B. should be encouraged C. is poor practice D. is standard practice
State the primary difference between a detector and a meter
A) A meter simply detects the presence of a contaminant. A detector measures the amount of the contaminant. B) A detector simply detects the presence of a contaminant. A meter measures the amount of the contaminant. C) Detectors are calibrated in standard units and meters are calibrated in metric units. D) They are two words for the same instruments.
A practical op amp has
A) high input impedance B) high voltage gain C) zero output impedance D) both a and b