Engineering Materials in EE Which of the following is the least desired property in magnetic materials for electrical engineering applications ? High electrical resistivity. Large hysteresis loop. High magnetic permeability. All of these High electrical resistivity. Large hysteresis loop. High magnetic permeability. All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which statement is not true of ferromagnetic materials. They have fixed value of μr. They lose their nonlinearly property above the Curie temperature. They have large magnetic susceptibility. Energy loss is proportional to the area of hysteresis loop. They have fixed value of μr. They lose their nonlinearly property above the Curie temperature. They have large magnetic susceptibility. Energy loss is proportional to the area of hysteresis loop. 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 magnetostriction. magneto-calorisation. magnetic hysteresis. magnetic expansion. magnetostriction. magneto-calorisation. magnetic hysteresis. magnetic expansion. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In Bohr’s model of atomic structure, the nucleus consists of electrons. protons and neutrons. electrons and protons. protons. electrons. protons and neutrons. electrons and protons. protons. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE What is the name of the fluorescent material that gives red colour fluorescence? Zinc sulphide. Magnesium silicate. Zinc silicate. Calcium silicate. Zinc sulphide. Magnesium silicate. Zinc silicate. Calcium silicate. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Cryogenics is a branch of science dealing with which of the following? High temperature. Crystal growth. Low temperature. Friction and wear. High temperature. Crystal growth. Low temperature. Friction and wear. ANSWER DOWNLOAD EXAMIANS APP
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