Magnetism and Electromagnetism What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current? 240 At 24 At 2.4 At 2,400 At 240 At 24 At 2.4 At 2,400 At ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following type of materials are not very important for engineering applications? Diamagnetic material Paramagnetic material Ferro magnetic material None of the listed here Diamagnetic material Paramagnetic material Ferro magnetic material None of the listed here 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. triangular rectangular circular None of the listed here triangular rectangular circular None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The retentivity of material is useful for the construction of Transformers Non-magnetic substances Permanent magnets Electromagnets Transformers Non-magnetic substances Permanent magnets Electromagnets ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism The relative permeability of materials is not constant. Ferromagnetic None of the listed here Paramagnetic Diamagnetic Ferromagnetic None of the listed here Paramagnetic Diamagnetic ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will Increase Remain Constant Be excessive Decrease Increase Remain Constant Be excessive Decrease ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS