A source, a path, and a load ________
A) can only be an open circuit B) do not make up a complete circuit
C) make up a basic circuit D) will allow current to flow if the switch is open
C
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True or False: Section 250.54 of the NEC states that the earth provides an effective ground-fault current path.
Answer the following statement true (T) or false (F)
What kind of welds are to be made based on the welding symbols shown in Figure 3?
a. Slot
b. Bevel groove
c. Plug
d. Fillet
Based on their fire properties, interior finishes are divided into
A) Classes W, X, Y, and Z. B) Classes X, Y, and Z. C) Classes A, B, C, and D. D) Classes A, B, and E) Classes I, II, III, and IV.
Locations in which flammable gases or vapors may be present in the air in quantities sufficient to produce explosive or ignitable mixtures are identified as _____.
a. Class I locations b. Class II locations c. Class III locations d. Class IV location