Quiz_11_1 - B L,366 Q uiz1 1A F all',Og N ame s et-*v o ,/...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
BL,366 Quiz 11A Fall',Og Name set-*v o ,/ l(90%) A continuous electric current of 2750 amps is to be transmitted from a generator to a transfomer located 300 feet away. A copper conductor can be installed for $g per pound, will have an estimated life of25 years, and can be salvaged for $2 per pound. The density of copper is 555 lb per cubic foot. power loss from the conductoi is inversely proportional to the cross-sectional area of the conductor and can be expressed as 18.48/A kilowatts, where A is in square inches. Assume cost of energy is $0.b6 per kilowatt-hour and use an MARR of 10%. Find the optimal cross-sectional area ofthe conductor. T = (/-L -)i 15t-'v 4,n')/ /+- \1 '.oy*\ = 't f zsofi ' /b // \ {_r' ^ /l )i+,,;- )\ / \ri Losses .= ,J.+s t"/ ( tTbo h ^ \(d Zqt, \ '='q,7rz'o1 /r/ "/"n * | -3. )\ h;h J --F- / clc -. rz s)(a/r, , ,u)+ i t = (6c a7.(oY o.//o/1)+(/)(z,7rz.(o) & n- = 7f e, w-* Per 1€G-/ 42c= cl + Lot,t'e{'
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/20/2010 for the course EE 366 taught by Professor Pore during the Spring '08 term at University of Texas at Austin.

Page1 / 2

Quiz_11_1 - B L,366 Q uiz1 1A F all',Og N ame s et-*v o ,/...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online