Magnetism and Electromagnetism Which of the following is the unit of magnetic flux density? Lumens Tesla None of the listed here Weber Lumens Tesla None of the listed here Weber 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? 300 AT 3 AT 30 AT 0.3 AT 300 AT 3 AT 30 AT 0.3 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials are a bit inferior conductors of magnetic flux than air. Diamagnetic Ferromagnetic None of the listed here Dielectric Diamagnetic Ferromagnetic None of the listed here Dielectric ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is 120 mA 1.7 mA 12 mA 16 mA 120 mA 1.7 mA 12 mA 16 mA ANSWER DOWNLOAD EXAMIANS APP
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 The attraction capacity of electromagnet will increase if the Core length increases Flux density decreases Flux density increases Core area increases Core length increases Flux density decreases Flux density increases Core area increases ANSWER DOWNLOAD EXAMIANS APP
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