For which of the following materials the net magnetic moment should be zero ? A. Diamagnetic materials B. Ferrimagnetic materialsC. Antiferromagnetic materials D. Antiferrimagnetic materials
Which of the following statements is correct ? A. The conductivity of ferrites is better than ferromagnetic materials B. The conductivity of ferromagnetic materials is better than ferrites C. The conductivity of ferrites is very high D. The conductivity of…
Core of an electromagnet should have____________? A. low coercivity B. high susceptibilityC. both of the above D. none of the above
Main causes of noisy solenoid are______________? A. strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force B. uneven bearing surface, caused by dirt or uneven wear between moving and stationary partsC.…
Magnetism of a magnet can be destroyed by_____________? A. heating B. hammering C. by inductive action of another magnetD. by all above methods