Electrical Engineering : Magnetism And Electromagnetism QUESTIONS AND ANSWERS :: part1 : 21 to 25
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.The ratio of intensity of magnetisation to the magnetisation force is known as |
| flux density |
| susceptibility |
| relative permeability |
| none of the above |
22.Materials subjected to rapid reversal of magnetism should have |
| large area oiB-H loop |
| high permeability and low hysteresis loss |
| high co-ercivity and high reten-tivity |
| high co-ercivity and low density |
23.The main constituent of permalloy is |
| cobalt |
| chromium |
| nickel |
| tungsten |
24.The direction of magnetic lines of force is |
| from south pole to north pole |
| from north pole to south pole |
| from one end of the magnet to another |
| none of the above |
25.A magnetic field exists around |
| iron |
| copper |
| aluminium |
| moving charges |
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