Magnetism and Electromagnetism Substances which have permeability less than the permeability of free space are known as Ferro magnetic material Bipolar Diamagnetic material Paramagnetic material Ferro magnetic material Bipolar Diamagnetic material Paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The ability of a material to remain magnetized after removal of the magnetizing force is known as retentivity hysteresis permeability reluctance retentivity hysteresis permeability reluctance ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 2.4 At 24 At 2,400 At 240 At 2.4 At 24 At 2,400 At 240 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetomotive force is The voltage across the two ends of exciting coil The sum of all currents embraced by one line of magnetic field The passage of magnetic field through an exciting coil The flow of an electric current The voltage across the two ends of exciting coil The sum of all currents embraced by one line of magnetic field The passage of magnetic field through an exciting coil The flow of an electric current ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be M 2M M/2 M/4 M 2M M/2 M/4 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The initial permeability of an iron rod is The lowest permeability of the iron rod The highest permeability of the iron rod The permeability almost in non-magnetised state The permeability at the end of the iron rod The lowest permeability of the iron rod The highest permeability of the iron rod The permeability almost in non-magnetised state The permeability at the end of the iron rod ANSWER DOWNLOAD EXAMIANS APP
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