Magnetism and Electromagnetism The unit for reluctance is At/m At/Wb Wb tesla At/m At/Wb Wb tesla ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism For a given wirewound core, an increase in current through the coil causes no change in flux density increases the flux density reverses the flux lines decreases the flux density causes no change in flux density increases the flux density reverses the flux lines decreases the flux density ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism An electromagnetic field exists only when there is decreasing current voltage an increasing current current decreasing current voltage an increasing current current ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The magnetism left in the iron after exciting field has been removed is known as susceptance reluctance permeance residual magnetism susceptance reluctance permeance residual magnetism ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When a solenoid is activated, the force that moves the plunger is an electromagnetic field a steady current a permanent magnetic field varying voltage an electromagnetic field a steady current a permanent magnetic field varying voltage ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m2, and a permeability of 4,500 Wb/At × m? 1 At/Wb 111 At/Wb 1111 At/Wb 11 At/Wb 1 At/Wb 111 At/Wb 1111 At/Wb 11 At/Wb ANSWER DOWNLOAD EXAMIANS APP
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