_________________________, which are denoted as equally spaced dashed lines on a drawing, represent the edges of an object or its features that cannot be seen on the real object but would be visible if the object were partially transparent.
Fill in the blank(s) with the appropriate word(s).
Hidden lines
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NFPA 72® contains _____.
a. requirements for all electrical work performed in a building b. requirements for residential and commercial installation of fire alarm systems and equipment c. requirements for life safety d. requirements for the testing, operation, installation, and periodic preventive maintenance of fire alarm systems
When an individual disconnect device in an energized motor control center has been locked out, that bucket is _____.
a. in an electrically safe work condition b. still a potential arc flash risk c. considered accessible to nonqualified persons d. under the control of the affected person
Condensation in the housing of a composite headlight system will cause the bulb to burn out.
Answer the following statement true (T) or false (F)
Technician A says the gears in a planetary gearset are in constant mesh. Technician B says a planetary gearset has a ring gear and pinion gears. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B