GFCI receptacles should be tested at least once per __________.
a. day
b. week
c. month
d. year
c. month
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Technician A says that when stress relieving on high strength steel surfaces, it must be done over a larger area than on standard or mild steel. Technician B says a limited amount of heat can be used so long as the safe temperature time threshold is not exceeded. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B
Which is NOT a criteria the EPA uses to define used oil?
A) Use B) Color C) Origin D) Contaminants
Which type of single-phase induction motor is used for hard-starting applications, such as for compressors?
A. resistance-start B. capacitor-start
Briefly describe how concrete is made and describe its beneficial properties.
What will be an ideal response?