Magnetism and Electromagnetism The magnetic reluctance of a material Does not vary with increasing cross-sectional area of material Decreases with increasing cross sectional area of material Any of the listed here Increases with increasing cross-sec-tional area of material Does not vary with increasing cross-sectional area of material Decreases with increasing cross sectional area of material Any of the listed here Increases with increasing cross-sec-tional area of material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it? 30 AT 0.3 AT 300 AT 3 AT 30 AT 0.3 AT 300 AT 3 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Materials subjected to rapid reversal of magnetism should have High co-ercivity and high retentivity Large area of B-H loop High permeability and low hysteresis loss High co-ercivity and low density High co-ercivity and high retentivity Large area of B-H loop High permeability and low hysteresis loss High co-ercivity and low density ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of magnetic lines of force is None of the listed here From south pole to north pole From north pole to south pole From one end of the magnet to another None of the listed here From south pole to north pole From north pole to south pole From one end of the magnet to another ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making Temporary Magnet None of the listed here Permanent magnet Weak magnet Temporary Magnet None of the listed here Permanent magnet Weak magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When the north poles of two bar magnets are brought close together, there will be no force a force of repulsion a downward force a force of attraction no force a force of repulsion a downward force a force of attraction ANSWER DOWNLOAD EXAMIANS APP
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