Magnetism and Electromagnetism The magnetomotive force is The flow of an electric current The passage of magnetic field through an exciting coil The sum of all currents embraced by one line of magnetic field The voltage across the two ends of exciting coil The flow of an electric current The passage of magnetic field through an exciting coil The sum of all currents embraced by one line of magnetic field The voltage across the two ends of exciting coil ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A basic one-loop dc generator is rotated at 90 rev/s. How many times each second does the dc output voltage peak (reach maximum)? 180 270 360 90 180 270 360 90 ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The change of cross-sectional area of conductor in magnetic field will affect both of the listed here reluctance of conductor None of these resistance of conductor both of the listed here reluctance of conductor None of these resistance of conductor ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making Weak magnet Temporary Magnet Permanent magnet None of the listed here Weak magnet Temporary Magnet Permanent magnet None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be None of the listed here BLI BLI2 Zero None of the listed here BLI BLI2 Zero ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For which of the following materials the saturation value is the highest? Ferrites Diamagnetic materials Ferromagnetic materials Paramagnetic materials Ferrites Diamagnetic materials Ferromagnetic materials Paramagnetic materials ANSWER DOWNLOAD EXAMIANS APP
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