Exam (elaborations) TEST BANK FOR Fitzgerald Kingsley Electric Machinery 7th Edition By Stephen D. Umans (Solutions Manual)

Problem 1-1 Part (a): Rc = lc μAc = lc μrμ0Ac = 0 A/Wb Rg = g μ0Ac = 5.457 × 106 A/Wb Part (b):  = NI Rc + Rg = 2.437 × 10−5 Wb Part (c):  = N = 2.315 × 10−3 Wb Part (d): L =  I = 1.654 mH Problem 1-2 Part (a): Rc = lc μAc = lc μrμ0Ac = 2.419 × 105 A/Wb Rg = g μ0Ac = 5.457 × 106 A/Wb c 2014 by McGraw-Hill Education. This is proprietary material solely for authorized instructor use. Not authorized for sale or distribution in any manner. This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part. 2 Part (b):  = NI Rc + Rg = 2.334 × 10−5 Wb Part (c):  = N = 2.217 × 10−3 Wb Part (d): L =  I = 1.584 mH Problem 1-3 Part (a): N = s Lg μ0Ac = 287 turns Part (b): I = Bcore μ0N/g = 7.68 A Problem 1-4 Part (a): N = s L(g + lcμ0/μ) μ0Ac = s L(g + lcμ0/(μrμ0)) μ0Ac = 129 turns Part (b): I = Bcore μ0N/(g + lcμ0/μ)