Which of the following is not one of the NFPA 70E shock protection boundaries?
A. Limited approach boundary
B. Controlled approach boundary
C. Restricted approach boundary
D. Prohibited approach boundary
Answer: B
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Tube cutters are used to ____.
A. cut insulation for tubing B. cut iron pipe used for natural gas or liquefied petroleum gas C. cut copper tubing D. cut sheet metal duct
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For maximum efficiency, the duct system should be located within the building's:
A) Interior walls. B) Basement. C) Insulation envelope. D) Mechanical room.
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Diodes and transistors are types of ____.
A. capacitors B. conductors C. semiconductors D. coils E. none of the above
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A capacitive proximity switch senses conductive and non-conductive material.
Answer the following statement true (T) or false (F)
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