Control joints should be cut into concrete slabs between 4 and 12 hours after concrete placement using a _____.
a. steel trowel
b. dry-cut saw blade
c. wet-cut saw blade
d. jointing chisel
c. wet-cut saw blade
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Which diagram is most useful to the worker who installs the conduit and the wires between the starter panel and the control panel and motor?
What will be an ideal response?
Technician A says spark plugs that have tapered seats require no gasket. Technician B says spark plugs that have flat seats require gaskets. Who is correct?
A. Technician A B. Technician B C. Both technicians D. Neither technician
Why should some refrigerants NOT be recovered?
A) Older machines may hold toxic chemicals. B) Many machines hold too little refrigerant to recover. C) Type III refrigerant cannot be reused. D) Older refrigerants have mostly dissipated already.
If a 1/3 horsepower single phase compressor normally operates at 6.8 amps, approximately how many amps will this compressor draw on start-up?
What will be an ideal response?