Ducts used to transport dust, loose stock, or flammable vapors shall not contain ____ of any type.
A. junction boxes
B. wiring systems
C. electrical grounds
D. panel boxes
Answer: B
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Hard hats are required only for construction jobs that have been determined to have excessive hazards.
Answer the following statement true (T) or false (F)
In simple beams, stirrups are used to resist _____.
a. diagonal tension b. upward thrust c. compression stress d. metal fatigue
What does LEED certification mean?
A) Litigation Equipped Engineering Design protects building owners from lawsuits arising from indoor air quality issues. B) Lower Environmental Energy Displacement certifies that a building operates at the lowest energy level possible. C) Lifetime Environmental Engineering Design examines the environmental impact of the building over its lifetime. D) Leadership in Energy Efficiency and Environmental Design (LEED) is a green building standards certification.
In an inductive AC circuit, when the applied voltage is at its maximum negative value, the current is _____
a. zero b. increasing toward maximum positive c. at the maximum negative value d. at the maximum positive value