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Consider the following statements: 1. Both ferromagnetic and ferrimagnetic materials have domain structures; each domain has randomly oriented magnetic moments when no external field is applied. 2. Both ferromagnetic and ferrimagnetic materials make those domains that have a favourable orientation to the applied field grow in size. 3. The net magnetic moment in ferromagnetic materials is higher than that in ferrimagnetic materials. 4. The net magnetic moment in ferrimagnetic materials is higher than that in ferromagnetic material. Which of the above statements are correct?
Consider the following statements for piezoelectric materials: 1. All piezoelectric materials are ferroelectric materials also. 2. Piezoelectric materials have a high value of dielectric constant. Which of the above statements is/are correct?
Which one of the following are true of authentic materials for language learning? a. Materials should take into consideration the socio-cultural milieu of the region. b. Materials should provide a route map for learner to move on. c. Any materials could be taught in any region.
Ferrites are a sub-group of
Ferrites are __________ magnetic.
Ferrites are perticularly suited for high frequency application because of their 
Which of the following compounds is widely used in the manufacture of ferrites?
Which of the following statements is not correct regarding ferrites?
I. Pulse transformers use soft ferrites. II. The transformers used in the radio recievers use air core.
Which of the following is not a use of magnesium-manganese ferrites?