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 187 At 300 At 18.75 At 30 At 187 At 300 At 18.75 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Magnetising steel is normals difficult because it has high specific gravity it has low permeability it has high permeability it corrodes easily it has high specific gravity it has low permeability it has high permeability it corrodes easily ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is expected to have the maximum permeability ? Copper Ebolite Brass Zinc Copper Ebolite Brass Zinc ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The left hand rule correlates to Self induction, mutual induction and direction of force on a conductor Current, magnetic field and direction of force on a conductor Current, induced e.m.f. and direction of force on a conductor Magnetic field, electric field and direction of force on a conductor Self induction, mutual induction and direction of force on a conductor Current, magnetic field and direction of force on a conductor Current, induced e.m.f. and direction of force on a conductor Magnetic field, electric field and direction of force on a conductor ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Main causes of noisy solenoid are uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts Both of the listed here None of these strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts Both of the listed here None of these strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is a ferromagnetic material? Tungsten Copper Nickel Aluminium Tungsten Copper Nickel Aluminium ANSWER DOWNLOAD EXAMIANS APP
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