Magnetism and Electromagnetism Strength of an electromagnet can be increased by Increasing the cross-sectional area All of the listed here Increasing current supply Increasing the number of turns Increasing the cross-sectional area All of the listed here Increasing current supply Increasing the number of turns ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Which of the following is expected to have the maximum permeability ? Ebolite Copper Brass Zinc Ebolite Copper Brass Zinc ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism A material which is slightly repelled by a magnetic field is known as ferromagnetic material diamagnetic material conducting material paramagnetic material ferromagnetic material diamagnetic material conducting material paramagnetic material ANSWER DOWNLOAD EXAMIANS APP
Magnetism and Electromagnetism Reciprocal of permeability is Permeability Susceptibility Reluctivity conductance Permeability Susceptibility Reluctivity conductance 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 increases reverses polarity decreases remains unchanged increases reverses polarity decreases remains unchanged 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 Remains same Decreases First increases and then decreases depending on the depth of iron in¬sertion Increases Remains same Decreases ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS