Engineering Materials in EE Temporary magnets are used in which of the following ? Hoist. Motors. Generators. All of these. Hoist. Motors. Generators. All of these. 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 expansion. magnetostriction. magnetic hysteresis. magneto-calorisation. magnetic expansion. magnetostriction. magnetic hysteresis. magneto-calorisation. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The electron configuration of copper is 1s2 , 2s2 2p6, 3s2 3p6 3d8, 4s1 4p 1s2 , 2s2 2p6, 3s2 3p6 3d9, 4s2. 1s2 , 2s2 2p6, 3s2 3p6 3d10, 4s1. none of above. 1s2 , 2s2 2p6, 3s2 3p6 3d8, 4s1 4p 1s2 , 2s2 2p6, 3s2 3p6 3d9, 4s2. 1s2 , 2s2 2p6, 3s2 3p6 3d10, 4s1. none of above. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Why diamond is very hard ? None of these Because of high melting point Because of covalent solid Because of large cohesive energy None of these Because of high melting point Because of covalent solid Because of large cohesive energy ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE A material with unequal anti-parallel atomic magnetic moments is an anti-ferromagnet. ferrimagnet. non-magnetic. a ferrite. an anti-ferromagnet. ferrimagnet. non-magnetic. a ferrite. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The permeability of iron can be increased by purifying it. alloying with cobalt. reducing carbon percentage. increasing carbon percentage. purifying it. alloying with cobalt. reducing carbon percentage. increasing carbon percentage. ANSWER DOWNLOAD EXAMIANS APP
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