Magnetism and Electromagnetism What is the magneto-motive force (mmf) of a wire with 8 turns carrying three amperes of current? 24 At 240 At 2.4 At 2,400 At 24 At 240 At 2.4 At 2,400 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Main causes of noisy solenoid are 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 uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts Both of the listed here None of these 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 187 At 300 At 18.75 At 30 At 187 At 300 At 18.75 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The stray line of magnetic flux is defined as A line vertical to the flux lines A line of magnetic flux in a non-uniform field The mean length of a ring shaped coil A line of magnetic flux which does not follow the designed path A line vertical to the flux lines A line of magnetic flux in a non-uniform field The mean length of a ring shaped coil A line of magnetic flux which does not follow the designed path ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The commonly used material for shielding or screening magnetism is Aluminium Brass Soft iron Copper Aluminium Brass Soft iron Copper ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A permeable substance is one which is a bad conductor which is a good conductor which is a strong magnet through which the magnetic lines of force can pass very easily which is a bad conductor which is a good conductor which is a strong magnet through which the magnetic lines of force can pass very easily ANSWER DOWNLOAD EXAMIANS APP
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