Engineering Materials in EE Which of the following is the example for piezo-electric material ? Copper Potassium niobate None of these Lead zirconate titanate Copper Potassium niobate None of these Lead zirconate titanate ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Temporary magnets are used in which of the following ? All of these. Generators. Motors. Hoist. All of these. Generators. Motors. Hoist. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The temperature beyond which substances lose their ferroelectric properties, is known as inversion temperature. curie temperature. critical temperature. conversion temperature. inversion temperature. curie temperature. critical temperature. conversion temperature. 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. magnetostriction. magnetic expansion. magnetic hysteresis. magneto-calorisation. magnetostriction. magnetic expansion. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE It is difficult to magnetize steel because it has high permittivity. low susceptibility. low permeability. high permeability. high permittivity. low susceptibility. low permeability. high permeability. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Cryogenics is a branch of science dealing with which of the following? Crystal growth. Low temperature. High temperature. Friction and wear. Crystal growth. Low temperature. High temperature. Friction and wear. ANSWER DOWNLOAD EXAMIANS APP
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