Electromagnetic Field Theory MCQ Questions & Answers | ECE

A. slotted line

B. balun

C. directional coupler

D. λ/4 transformer

A. 1, 2 and 3

B. 1, 2 and 4

C. Only 2 and 4

D. 1, 3 and 4

A. F

B. -F

C. 5F

D. -5F

A. R = 0, G ≠ 0 and α = 0

B. R = 0, G = α, 0 and β = |γ|

C. G = 0 and α = β

D. R = 0, G = 0, α = 0 and β = |γ|

A. r for r < a and $$\frac{1}{{{{\text{r}}^2}}}$$ for r > a

B. 0 for r < a and $$\frac{1}{{\text{r}}}$$ for r > a

C. r for r < a and $$\frac{1}{{\text{r}}}$$ for r > a

D. 0 for r < a and $$\frac{1}{{{{\text{r}}^2}}}$$ for r > a

A. 200 mA

B. 20 mA

C. 20 A

D. 2 mA

A. $$ - 27{\overline a _x} - 3{\overline a _y} - 9{\overline a _z}$$

B. $$ - 2{\overline a _x} + 9{\overline a _y} - 20{\overline a _z}$$

C. $$5{\overline a _x} + 3{\overline a _y} - 10{\overline a _z}$$

D. $${\overline a _x} + {\overline a _y} + {\overline a _z}$$

A. $$\nabla \times {\text{E}} = - \frac{{\partial {\text{B}}}}{{\partial {\text{t}}}}$$

B. $$\nabla .{\text{B}} = 0$$

C. $$\nabla .{\text{D}} = \rho $$

D. $$\nabla \times {\text{H}} = {\text{J}} + \frac{{\partial {\text{D}}}}{{\partial t}}$$

A. $$\frac{3}{2}$$

B. $$\frac{2}{3}$$

C. $$\frac{5}{2}$$

D. $$\frac{2}{5}$$

A. resistive

B. inductive

C. capacitive

D. complex