﻿Waves of Magnetic Flux along Iron Wires 



5. Details of Specimen A. 

 A straight cylindrical rod of Lowmoor iron. 

 Length — 267 cms. 

 Diameter = *644 cm. Section = '3260 sq. cm. 



Length of magnetizing solenoid 2 "54 cm. 



"Radial depth of „ „ 2'40 cm. 



Mean radius of „ „ 1*70 cm. 



No. of turns on „ „ 240. 



Specific resistance of the iron = 1*140 x 10 4 . 



439 





Statical Permeability for different Inductions. 



B... 

 fi... 



25 



290 



50 

 325 



100 

 370 



250 

 451 



500 



550 



750 



650 



1000 



2000 



I 

 3000 5000 7000 



9000 



11000 13000 



15000 



750 



1160 



| 

 1490 1960 2215 



1 1 



2300 



2105 1720 



900 



The analysed results of the alternating current experiments 

 with this specimen are given in the following tables (I. to IV.), 

 and the values of the flux and leakage coefficients at different 

 points due to a continuous magnetizing force at the centre 

 of the rod are given in Table V. 







Table 



I. — Specimen A. T = '0< 



33 q.p 







0=1371 sin w*+-00642 sin 3(w/— 55"28) + -00057 sin 5(w*-68'23). 

 F=/i sin (iu/-9)+f, sin 3(ut-0-p 3 )+f 5 sin 5(W- 0-/3,). 



X. 



t. ./;. 



/.. 



./,. e. 



Ar |3 5 . 



Qx — Oq- 



K 



0... 

 5... 



10... 



15... 



20... 



30... 



40... 



50... 



60... 



70... 



80... 

 100... 

 120... 

 130... 



■0537 

 •0536 

 •0534 

 •0531 

 •0532 

 •0518 

 •0528 

 •0530 

 •0526 

 •0515 

 •0526 

 ■0527 

 •0528 

 •0528 



3798 

 2618 

 1710 

 1131 

 738 

 269-1 

 83-g 

 27-0 

 9-51 

 4-383 

 2-583 

 1-175 

 0-604 

 0-323 



51-7 

 70-1 

 51-8 

 37-6 

 23-4 

 6-83 

 1-50 

 0-28 



•0058 



23-3 

 140 

 797 

 554 



1-85 



0-49 

 •0035 



30-64 



41-42 



5359 



64-41 



74-46 



93-21 



105-42 



107-27 



101-97 



92-31 



84-SO 



78-00 



74-61 



69-64 



9335 

 9204 

 92-35 

 94-68 



98-09 

 106-06 

 109-52 



133-3 



31-85 



32-19 

 2917 

 31-68 

 31-03 



3867 





 10-78 

 22 95 

 33-77 

 43-82 

 6257 

 74-7S 

 76-63 

 71-33 

 61-67 

 54-16 

 47-36 

 43-97 

 39-00 



0744 

 •0852 

 •0826 

 •0855 

 •1009 



1167 

 •1134 

 ■1042 

 •0775 

 •0529 

 •0394 

 •0333 

 •0626 



