Magnetism and Electromagnetism Main causes of noisy solenoid are Both of the listed here uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force None of these Both of the listed here uneven bearing surface, caused by dirt or uneven wear between moving and stationary parts strong tendency of fan out of laminations at the end caused by repulsion among magnetic lines of force None of these ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is the unit of magnetic flux density? Tesla Lumens Weber None of the listed here Tesla Lumens Weber None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The materials having low retentivity are suitable for making Weak magnet None of the listed here Permanent magnet Temporary Magnet Weak magnet None of the listed here Permanent magnet Temporary Magnet ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetic reluctance of a material Does not vary with increasing cross-sectional area of material Increases with increasing cross-sec-tional area of material Decreases with increasing cross sectional area of material Any of the listed here Does not vary with increasing cross-sectional area of material Increases with increasing cross-sec-tional area of material Decreases with increasing cross sectional area of material Any of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When an iron piece is placed in a magnetic field the magnetic lines of force will bend away from their usual paths in order to go away from the piece the magnetic field will not be affected the iron piece will break the magnetic lines of force will bend away from their usual paths in order to pass through the piece the magnetic lines of force will bend away from their usual paths in order to go away from the piece the magnetic field will not be affected the iron piece will break the magnetic lines of force will bend away from their usual paths in order to pass through the piece ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be 10 N 100 N 0.1 N 0.01 N 10 N 100 N 0.1 N 0.01 N ANSWER DOWNLOAD EXAMIANS APP
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