Engineering Materials in EE Which statement is not true of ferromagnetic materials. 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. They have fixed value of μr. They lose their nonlinearly property above the Curie temperature. They have large magnetic susceptibility. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE What is the dielectric constant of mica ? 100. 1 to 2. 200. 3 to 8. 100. 1 to 2. 200. 3 to 8. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE How many valence electrons would be found in an atom with the atomic number of 51? 51. 5. 8. none of above. 51. 5. 8. none of above. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE What is the name of the fluorescent material that gives red colour fluorescence? Calcium silicate. Magnesium silicate. Zinc silicate. Zinc sulphide. Calcium silicate. Magnesium silicate. Zinc silicate. Zinc sulphide. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following is the example for piezo-electric material ? None of these Copper Potassium niobate Lead zirconate titanate None of these Copper Potassium niobate Lead zirconate titanate 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 magnetic hysteresis. magneto-calorisation. magnetic expansion. magnetostriction. magnetic hysteresis. magneto-calorisation. magnetic expansion. magnetostriction. ANSWER DOWNLOAD EXAMIANS APP
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