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 4 AT 16 AT 10 AT 8 AT 4 AT 16 AT 10 AT ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Materials subjected to rapid reversal of magnetism should have High co-ercivity and high retentivity High co-ercivity and low density Large area of B-H loop High permeability and low hysteresis loss High co-ercivity and high retentivity High co-ercivity and low density Large area of B-H loop High permeability and low hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The direction of a magnetic field within a magnet is from south to north from north to south back to front front to back from south to north from north to south back to front front to back ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials. circular None of the listed here rectangular triangular circular None of the listed here rectangular triangular ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is the unit of magnetic flux density? Lumens Tesla Weber None of the listed here Lumens Tesla Weber None of the listed here 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? Increases First increases and then decreases depending on the depth of iron in¬sertion Remains same Decreases Increases First increases and then decreases depending on the depth of iron in¬sertion Remains same Decreases ANSWER DOWNLOAD EXAMIANS APP
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