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Module 3. Electrical fundamentals
A paramagnetic material has a relative permeability of
•  zero.
•  less than unity.
•  greater than unity.

Yappie asking:
•  why?

Community comments: 3
dimky
Posts: 509
23.02.2012 / 15:52
Hey Yap.

A paramagnetic material has a greater permeability than free space (vacuum). So its relative permeability is greater than 1.
aerorodder1
Posts: 20
23.12.2015 / 07:16
Its like a magnetometer... It picks up magnetic flux or permeabiliy but
Isn't really a true magnet but what's called a flux valve which are normally located in the wing tips. Caution or care should be taken to insure the screws you remove in the panels to access this valve are aluminum or non magnetic..or it will throw off the readings. Just like you wouldn't want to throw your iPad (with magnetic closing tabs), up onto the glareshied panel. That will also affect the whiskey compass! But your o.k. on an MD-80 because the compass is located in the back wall and has a reverse compass card.
? How do read the compass in an MD-80.



With the mirror!!
Yappie
Posts: 1
03.03.2016 / 03:23
Thanks guys. Only managed to read them now. After years of doing thru TAME.
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