Magnetism and Electromagnetism Substances which have permeability less than the permeability of free space are known as Ferro magnetic material Diamagnetic material Paramagnetic material Bipolar Ferro magnetic material Diamagnetic material Paramagnetic material Bipolar ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the mmf of a wire with 8 turns carrying three amperes of current? 240 AT 0.24 AT 2.4 AT 24 AT 240 AT 0.24 AT 2.4 AT 24 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability of materials is not constant. Paramagnetic None of the listed here Ferromagnetic Diamagnetic Paramagnetic None of the listed here Ferromagnetic Diamagnetic ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Materials subjected to rapid reversal of magnetism should have High co-ercivity and high retentivity High co-ercivity and low density High permeability and low hysteresis loss Large area of B-H loop High co-ercivity and high retentivity High co-ercivity and low density High permeability and low hysteresis loss Large area of B-H loop ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For a given wirewound core, an increase in current through the coil causes no change in flux density reverses the flux lines increases the flux density decreases the flux density causes no change in flux density reverses the flux lines increases the flux density decreases the flux density ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Temporary magnets are used in Loud speakers Generators All of the listed here Motors Loud speakers Generators All of the listed here Motors ANSWER DOWNLOAD EXAMIANS APP
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