Why is chevron bracing used in steel-framing systems?
What will be an ideal response?
Chevron bracing is oft en considered a more efficient method of vertical bracing than full X-bracing because it uses less material than X-bracing and allows more room to fit doors and windows beneath its apex.
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Which of these is added to a fuel for testing purposes to avoid problems with the variation of gasoline?
A) TBA (tertiary butyl alcohol) B) Xylene C) MTBE (methyl tertiary butyl ether) D) Indolene
When debrazing a joint on a refrigeration system, often:
A) The exiting fumes will extinguish the torch flame. B) The oil fumes will ignite when the joint is opened. C) The residual refrigerant will crystallize around the tube outlet. D) The vacuum created by the flames will cause a quick inward suction when the tube is pulled.
Commercial and industrial refrigeration systems:
A) Use three-phase equipment only. B) Are used only in supermarkets. C) Are only used in production facilities. D) Refer to retail food and cold-storage equipment and facilities.
Briefly discuss three techniques used to prevent orange peel.
What will be an ideal response?