Engineering Materials in EE Temporary magnets are used in which of the following ? Generators. All of these. Hoist. Motors. Generators. All of these. Hoist. Motors. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Which statement is not true of ferromagnetic materials. They have fixed value of μr. They lose their nonlinearly property above the Curie temperature. Energy loss is proportional to the area of hysteresis loop. They have large magnetic susceptibility. They have fixed value of μr. They lose their nonlinearly property above the Curie temperature. Energy loss is proportional to the area of hysteresis loop. They have large magnetic susceptibility. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Permittivity of free space is equal to 8.854 × 10 - 11 F / m. 8.854 × 10 - 13 F / m. 8.854 × 10 - 12 F / m. 8.854 × 10 - 10 F / m. 8.854 × 10 - 11 F / m. 8.854 × 10 - 13 F / m. 8.854 × 10 - 12 F / m. 8.854 × 10 - 10 F / m. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE The temperature beyond which substances lose their ferroelectric properties, is known as curie temperature. conversion temperature. critical temperature. inversion temperature. curie temperature. conversion temperature. critical temperature. inversion temperature. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE Materials which lack permanent magnetic dipoles are called None of these dia-magnetic. semi-magnetic. ferro-magnectic. None of these dia-magnetic. semi-magnetic. ferro-magnectic. ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials in EE A ferromagnetic core subjected to cycles of magnetisation will exhibit hysteresis when the cycle is pulsating. alternating. / >(A), (B), and (C) are all correct. rotating. pulsating. alternating. / >(A), (B), and (C) are all correct. rotating. ANSWER DOWNLOAD EXAMIANS APP
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