Engineering Materials in EE When a ferromagnetic substance is magnetized small changes in dimensions occur. Such a phenomenon is known as magneto-calorisation. magnetic hysteresis. magnetostriction. magnetic expansion. magneto-calorisation. magnetic hysteresis. magnetostriction. magnetic expansion. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The permanent magnets are made from which of following materials ? Diamagnetic. Soft iron. Ferromagnetic. Paramagnetic. Diamagnetic. Soft iron. Ferromagnetic. Paramagnetic. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE How many valence electrons would be found in an atom with the atomic number of 51? none of above. 5. 51. 8. none of above. 5. 51. 8. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which of the following is the example for piezo-electric material ? Copper Potassium niobate Lead zirconate titanate None of these Copper Potassium niobate Lead zirconate titanate None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The magnetisation and applied field in ferromagnetic materials are related parabolically. non linearly. sinusoidally. linearly. parabolically. non linearly. sinusoidally. linearly. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Indicate which of following material does not retain magnetism permanently none of above. hardness steel. stainless steel. soft iron. none of above. hardness steel. stainless steel. soft iron. ANSWER DOWNLOAD EXAMIANS APP
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