Explain the four parts of the designation of a cold-formed steel section: 1000S250 -68.
What will be an ideal response?
"S" means it is a stud section (for use as stud, floor joist, or rafter); "1000" means that the web depth = 10.00 in.; 250 indicates the flange width = 2.50 in.; and "68" gives the sheet thickness = 68 mil = 0.068 in. Web depth of 10 in. and sheet thickness of 68 mil indicates that the section will likely be used as floor joist.
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With no load attached, the voltage at the terminals of a particular power supply is 50.8 V. When a 10-W load is attached, the voltage drops to 49 V. a. Determine vS and RS for this non ideal source. b. What voltage would be measured at the terminals in the presence of a 15-? load resistor? c. How much current could be drawn from this power supply under short-circuit conditions?
What will be an ideal response?
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