Magnetism and Electromagnetism The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s is 3,125 V 2,000 V 31.25 V 1,000 V 3,125 V 2,000 V 31.25 V 1,000 V ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The main constituent of permalloy is Nickel Cobalt Chromium Tungsten Nickel Cobalt Chromium Tungsten ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the mmf of a wire with 8 turns carrying three amperes of current? 0.24 AT 2.4 AT 240 AT 24 AT 0.24 AT 2.4 AT 240 AT 24 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What will be the current passing through the ring shaped air cored coil when number of turns is 800 and ampere turns are 3200? 8 4 12 6 8 4 12 6 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Substances which have permeability less than the permeability of free space are known as Bipolar Ferro magnetic material Diamagnetic material Paramagnetic material Bipolar Ferro magnetic material Diamagnetic material Paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making Weak magnet Temporary Magnet None of the listed here Permanent magnet Weak magnet Temporary Magnet None of the listed here Permanent magnet ANSWER DOWNLOAD EXAMIANS APP
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