quiz2c - QuLUIIOM DWQI‘ZE Monday Jan 29.2001 EE 381\v...

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Unformatted text preview: QuLUIIOM DWQI‘ZE Monday Jan. 29, .2001 EE 381 ' \v ' Quiz 2 Name: . . a - - Last First _ i I. (a) Does acopper core have Ph and Pa? 1 pt- ' - (b)_Wh-ich material has the greatest permeability: . #6 , ferromagnetic? - gwromgwah; (c) An air cored magnetic circuit has a veiume of 40 cm3, H = 4 x 105 ATlm and B = 0.5 Tesla. What is the energy stored in theeme? 3 pts. diamagnetic, paramagnetic or ' 1 pt. Em??? -S"é7yu£ 2 £1 AM we ;...§' Luv/OS >2 407‘ ’0 I! fix. X 9 CT '3 2. A ferromagnetic core is observed to have a core loss of 30 We; 30 Hz. and 54 W at 50 Hz. Calculate Pi? and P. at 60 Hz. ' ' - Ms. Spits {C T: Kljl. + Kl; ; 30 r K130 + Li'2 53573 J- K; + 3"”‘9. "‘ I" i 57+ z k,” +kaE‘S—WJ'11 :- E‘Ekz 33-3 I it, 33.1 I k -‘ |::l‘1f.og 5‘9! H ' 573 '-° hog)“ 30 ..._ 17.4. | ~— . . ' '— h ! i 53. I . — 3 K2 : ’"fi0 85? 2: 4x (a .1? 0 ...
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