Electrical Machine Design Set 1

0.4%

✘

1.4%

✘

4%

✘

14%

✔

Pure iron ✘ Aluminium ✘ Copper ✘ Lead ✔

Cobalt, Nickel, Aluminium, Iron ✘ Permalloy, Nickel, Air, Water ✘ Silver, Copper, Aluminium, Iron ✘ Pure iron, Silicon iron. Aluminium, Bismuth. ✔

Absorptivity ✘ Emissivity ✘ Refractive index ✘ Dielectric strength ✔

Water: Air

✘

Iron: Steel

✘

Permalloy: Super-alloy

✘

Nickel: Cobalt.

✔

Diamagnetic material ✘ Paramagnetic material ✘ Ferro-magnetic material ✘ Ferrite. ✔

Nickel ✘ Cobalt ✘ Pure iron ✘ Permalloy. ✔

1 ✘ -l ✘

Hard drawn copper ✘ Native copper ✘ Annealed copper ✘ Purest form of copper. ✔

low voltage cables ✘ flexible wires ✘ machine windings ✘ all of the above. ✔