Engineering Materials in EE The core of a transformer for microwave frequency should be made of silicon. silicon carbide. ferrites. iron. silicon. silicon carbide. ferrites. iron. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Substance having permeability less than the permeability of free space, are known as ferromagnetic. paramagnetic. bipolar. diamagnetic. ferromagnetic. paramagnetic. bipolar. diamagnetic. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Absolute permittivity of a dielectric medium is represented by εr / εo. εoεr. None of these εo / εr. εr / εo. εoεr. None of these εo / εr. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE When a ferromagnetic substance is magnetized small changes in dimensions occur. Such a phenomenon is known as magneto-calorisation. magnetostriction. magnetic expansion. magnetic hysteresis. magneto-calorisation. magnetostriction. magnetic expansion. magnetic hysteresis. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE ________ is the most detrimental impurity in the magnetic materials Nitrogen. Sulphur. Oxygen. Carbon. Nitrogen. Sulphur. Oxygen. Carbon. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In order to minimise loss due to hysteresis, the magnetic material should have large B-H loop area. high retentivity. low hysteresis coefficient. high resistivity. large B-H loop area. high retentivity. low hysteresis coefficient. high resistivity. ANSWER DOWNLOAD EXAMIANS APP
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