What are open-web joists?
What will be an ideal response?
Open-web joists are a type of truss. They are lightweight structural members made from steel angles and bars. They, like other trusses, are end bearing and can span long distances in floor and roof constructions. Steel open-web joists typically require cross bracing to prevent twisting.
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____ defined input means that the user can program each of the inputs to serve different functions, such as jog, reverse, external reset, hold speed, or go to a pre-determined speed.
a. NEMA b. IEC c. Motor d. User
What is the major objection to an atomizing type humidifier?
What will be an ideal response?
What is the primary function of the private branch exchange (PBX)?
A. Switching one telephone line to another B. To meet the increasing demands of data transmission C. To meet the economic objectives of providing service D. To maintain order during the interchange of data
What type of duct system is commonly used with mini-split heat pumps?
A) Extended plenum B) No duct work C) Radial system D) Perimeter loop system