Magnetism and Electromagnetism Temporary magnets are used in Motors Loud speakers Generators All of the listed here Motors Loud speakers Generators All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Materials subjected to rapid reversal of magnetism should have High co-ercivity and high retentivity High co-ercivity and low density Large area of B-H loop High permeability and low hysteresis loss High co-ercivity and high retentivity High co-ercivity and low density Large area of B-H loop High permeability and low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Fleming's left hand rule is used to find Polarity of a magnetic pole Direction of magnetic field due to current carrying conductor Direction of force on a current carrying conductor in a magnetic field Direction of flux in a solenoid Polarity of a magnetic pole Direction of magnetic field due to current carrying conductor Direction of force on a current carrying conductor in a magnetic field Direction of flux in a solenoid ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following type of materials are not very important for engineering applications? None of the listed here Ferro magnetic material Paramagnetic material Diamagnetic material None of the listed here Ferro magnetic material Paramagnetic material Diamagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The attraction capacity of electromagnet will increase if the Flux density increases Flux density decreases Core length increases Core area increases Flux density increases Flux density decreases Core length increases Core area increases 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? 300 At 18.75 At 187 At 30 At 300 At 18.75 At 187 At 30 At ANSWER DOWNLOAD EXAMIANS APP
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