Materials And Components MCQ Questions & Answers | ECE

A. a-2, b-1, c-3

B. a-2, b-3, c-4

C. a-1, b-3, c-4

D. a-1, b-2, c-3

A. resistivity of Ni will increase at all temperatures because Cu is a better conductor than Ni

B. residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres

C. resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

D. resistivity of Ni remains unaltered as Cu atoms give the same number of free electrons as Ni atoms

A. 41350 A/m

B. 39000 A/m

C. 34500 A/m

D. 40500 A/m

A. Henery/meter

B. Henery

C. Henery/meter²

D. It is dimensionless

A. 4.12°F

B. 4.12°C

C. 4.12°K

D. 41.2°K

A. 1 only

B. 2 only

C. Both 1 and 2

D. Neither 1 nor 2

A. 1, 2 and 3 only

B. 2, 3 and 4 only

C. 1, 2 and 4 only

D. 1, 2, 3 and 4

A. Curie effect

B. Faraday's effect

C. Maxwell's effect

D. Meissner effect

A. The Cations are negatively charged, because they have given up their valence electrons to Anions which are positively charged

B. The Cations are positively charged, because they have given up their valence electrons to anions which are negatively charged

C. The Cations are positively charged, because they have added one electron to their valence electrons borrowing from Anions which are negatively charged

D. The cations are negatively charged, as they are non-metallic where as anion are positively charge being metallic

A. C = d₁ + d₂

B. $${\text{C}} = \frac{{{{\text{d}}_1}{{\text{d}}_2}}}{{{{\text{d}}_1} + {{\text{d}}_2}}}$$

C. C = C₁ + C₂

D. $${\text{C}} = \frac{{{{\text{C}}_1}{{\text{C}}_2}}}{{{{\text{C}}_1} + {{\text{C}}_2}}}$$