An insulated fuse puller should always be used to remove and replace a fuse in a fused disconnect rather than use metal pliers
Indicate whether the statement is true or false
TRUE
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What is the major difference between shell and tube vs. plate and frame heat exchangers?
A) Plate and frame can achieve small temperature difference between fluids. B) Shell and tube exchangers do not need cleaning. C) Plate and frame heat exchangers are less expensive. D) Shell and tube must have equal flows for both fluids.
____________________ are a class of animals that have stomachs with more than one compartment
Fill in the blank(s) with the appropriate word(s).Whenever an electrical current flows, ____ forces are being created.
a. alternating b. piezoelectric c. energy d. magnetic
For hydronic heating systems, routine maintenance covers the pump and controls, piping, radiators and convectors, and the:
A) Furnace. B) Boiler. C) Fan. D) Heating coil.