A) Nickel B) Copper C) Silver D) All of the above. Ans : (D)
A) Below Curie temperature ferro-magnetic and paramagnetic materials show similar behaviour B) Above Curie temperature ferro-magnetic and paramagnetic materials show similar behaviour C) At Curie temperature diamagnetic and ferro-magnetic materials show identical behaviour D) None of the above. Ans : (B)
A) Copper-lead B) Tin-silver-lead C) Tin-lead D) None. Ans : (A)
A) 2.6 B) 6.3 C) 12.1 D) 18.6. Ans : (A)
A) chloride B) arsenide C) oxide D) anhydride. Ans : (C)
A) increases the electrical resistivity of iron B) decreases the electrical resistivity of iron C) does not change electrical resistivity of iron. Ans : (A)
A) Cr Sb B) Ni O C) Mn O D) All of the above. Ans : (D)
A) Pour insulators B) Plastics with fillers C) Impregnated paper D) All of the above. Ans : (D)
A) gaseous dielectrics B) non-uniform dielectrics C) non-metallic dielectrics D) non-ferrous dielectrics. Ans : (A)
A) very much higher than that of the ferro-magnetic metals B) slightly higher than that of the ferro-magnetic metals C) slightly lower than that of the ferro-magnetic metals D) very much lower than that of the ferro-magnetic metals. Ans : (A)