____________________ wool, used mainly for men’s suits, uses wool that has not been processed.
Fill in the blank(s) with the appropriate word(s).
Worsted
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Explain how hydrogen is used in shielding gases, and why it is restricted to stainless steels.
What will be an ideal response?
Compare the results of Problem P13.20 (a) and (c) with Problem P13.21(a) and (c).
Computer Study—comparison of approximate analysis with an exact analysis.
(a) Use approximate analysis to compute the reactions and draw the moment diagrams for
column AB and girder BC of the frame in Figure P13.20, and draw the deflected shape.
Consider column bases are fixed. (b) Repeat the computations with pinned column bases at
A and D. (c) Compare the results with the exact analysis using a computer software.
Computer Study—comparison of approximate analysis with exact analysis.
Consider the structure in Figure P13.21. (a) Use approximate analysis to compute the
reactions and draw moment diagram for the column AB and draw the approximate deflected shape of the frame. (b) Determine truss bar forces. All truss joints are pinned. (c) Compare the results with the exact analysis using a computer software. Truss member properties are A
What causes flue gas condensation?
A) The flue gas is cooled below the dewpoint of the combustion gas. B) Operating the furnace during times of high relative humidity C) Water naturally condenses on metal surfaces. D) Cold air being pulled through the vent on the off cycle drops the vent temperature below the dewpoint of the surrounding air.
Which of the following materials is most commonly used for exterior finishes?
A) Spar varnish B) Oil-based paints C) Clay plaster D) Acrylic latex paints