Magnetism and Electromagnetism Ferrites are a sub-group of Non-magnetic materials Ferri-magnetic material Ferro magnetic material Paramagnetic material Non-magnetic materials Ferri-magnetic material Ferro magnetic material Paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon Motion of the magnet Number of turns of the coil Resistance of the coil Pole strength of the magnet Motion of the magnet Number of turns of the coil Resistance of the coil Pole strength of the magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The main constituent of permalloy is Tungsten Nickel Chromium Cobalt Tungsten Nickel Chromium Cobalt ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism There is 900 mA of current through a wire with 40 turns. What is the reluctance of the circuit if the flux is 400 Wb? 90,000 At/Wb 9,000 At/Wb 14,400 At/Wb 1,440 At/Wb 90,000 At/Wb 9,000 At/Wb 14,400 At/Wb 1,440 At/Wb ANSWER DOWNLOAD EXAMIANS APP
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 1,000 V 31.25 V 2,000 V 3,125 V 1,000 V 31.25 V 2,000 V ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When an iron piece is placed in a magnetic field the magnetic lines of force will bend away from their usual paths in order to go away from the piece the magnetic lines of force will bend away from their usual paths in order to pass through the piece the iron piece will break the magnetic field will not be affected the magnetic lines of force will bend away from their usual paths in order to go away from the piece the magnetic lines of force will bend away from their usual paths in order to pass through the piece the iron piece will break the magnetic field will not be affected ANSWER DOWNLOAD EXAMIANS APP
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