Engineering Materials in EE Which of the following is the example for piezo-electric material ? Lead zirconate titanate Copper Potassium niobate None of these Lead zirconate titanate Copper Potassium niobate None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Why diamond is very hard ? Because of covalent solid Because of high melting point Because of large cohesive energy None of these Because of covalent solid Because of high melting point Because of large cohesive energy None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE When will be the electron pair bonding occurs ? Lack holes Share electrons None of these Share holes Lack holes Share electrons None of these Share holes ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE In order to minimise loss due to hysteresis, the magnetic material should have low hysteresis coefficient. high retentivity. large B-H loop area. high resistivity. low hysteresis coefficient. high retentivity. large B-H loop area. high resistivity. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Materials having a high dielectric constant, which is non-linear, are known as hard die-electrics. ferroelectric materials. elastomers. super die-electrics. hard die-electrics. ferroelectric materials. elastomers. super die-electrics. 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. magnetostriction. magneto-calorisation. magnetic expansion. magnetic hysteresis. magnetostriction. magneto-calorisation. magnetic expansion. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS