Magnetism and Electromagnetism What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m? 8 AT 10 AT 4 AT 16 AT 8 AT 10 AT 4 AT 16 AT 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 A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil? First increases and then decreases depending on the depth of iron in¬sertion Increases Decreases Remains same First increases and then decreases depending on the depth of iron in¬sertion Increases Decreases Remains same ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism When a solenoid is activated, the force that moves the plunger is a steady current varying voltage an electromagnetic field a permanent magnetic field a steady current varying voltage an electromagnetic field a permanent magnetic field ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density increases remains the same decreases doubles increases remains the same decreases doubles ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism If a loop in a basic dc generator suddenly begins rotating at a faster speed, the induced voltage remains unchanged reverses polarity decreases increases remains unchanged reverses polarity decreases increases ANSWER DOWNLOAD EXAMIANS APP
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