Magnetism and Electromagnetism Materials subjected to rapid reversal of magnetism should have Large area of B-H loop High co-ercivity and high retentivity High co-ercivity and low density High permeability and low hysteresis loss Large area of B-H loop High co-ercivity and high retentivity High co-ercivity and low density High permeability and low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Indicate which of the following material does not retain magnetism permanently. Hardened steel Soft iron None of the listed here Stainless steel Hardened steel Soft iron None of the listed here Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability is less than unity is case of Ferrits Ferromagnetic material Diamagnetic material Paramagnetic material Ferrits Ferromagnetic material Diamagnetic material Paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength? 25 AT/m 2500 AT/m 250 AT/m 0.25 AT/m 25 AT/m 2500 AT/m 250 AT/m 0.25 AT/m ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism If the steel disk in a crankshaft position sensor has stopped with the tab in the magnet's air gap, the induced voltage None of the listed here Increase Decrease Is zero None of the listed here Increase Decrease Is zero ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it? 30 At 18.75 At 300 At 187 At 30 At 18.75 At 300 At 187 At ANSWER DOWNLOAD EXAMIANS APP
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