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A specimen of iron weighing 6kg loses 8*...

A specimen of iron weighing `6kg` loses `8*64xx10^4J` of energy per hour when subjected to `50c//s` a.c. If density of iron is `6000km//m^3`, what is the hysterisis loss per unit volume per cycle?

Text Solution

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Here, `m=6kg`
Energy los/hour`=8*64xx10^4J//hr`.
`v=50c//s, rho=6000kg//m^3`, hysterisis loss=?
volume, `V=m/rho=(6)/(6000)m^3=10^-3m^3`
If E is hysterisis loss (energy/vol./cycle), then energy lost/hour `=ExxVxx50xx60xx60`
`=8*64xx10^4`
`Exx10^-3xx18xx10^4=8*64xx10^4`
`E=(8*64xx10^4)/(18xx10)=4*8xx10^2J//m^3//cycl e`
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