GATE ECE 1996 | Uniform Plane Waves Question 63 | Electromagnetics

GATE ECE 1996

MCQ (Single Correct Answer)

-0.6

A uniform plane wave in air is normally incident on an infinitely thick slab. If the reflective index of the glass slab is 1.5, then the percentage of the incident power that is reflected from the air-glass interface is

20%

100%

GATE ECE 1993

MCQ (More than One Correct Answer)

-0

A plane wave is incident normally on a perfect conductor as shown in Fig. Here $$E_x^i,\,\,H_y^i$$ and $$\overrightarrow P {}^i$$ are electric field, magnetic field and Poynting vector respectively, for the incident wave. The reflected wave should have GATE ECE 1993 Electromagnetics - Uniform Plane Waves Question 58 English

GATE ECE 1993 Electromagnetics - Uniform Plane Waves Question 58 English

$$E_x^r = - E_x^i$$

$$H_y^r = - H_y^i$$

$$\overrightarrow P {}^r = - \overrightarrow P {}^i$$

$$E_x^r = E_x^i$$

GATE ECE 1993

MCQ (Single Correct Answer)

-0.6

A material is described by the following electrical parameters at a frequency of $$10$$ GHz is $$\sigma = {10^6}$$ mho/m, $$\mu = {\mu _0},$$ and $$ \in /{ \in _0} = 10.$$ The material at this frequency is considered to be $$\left( {{ \in _0} = {1 \over {36\,\,\pi }} \times {{10}^{ - 9}}\,\,F/m} \right)$$

a good conductor

a good dielectric

neither a good conductor nor a good dielectric

a good magnetic material

GATE ECE 1991

MCQ (More than One Correct Answer)

-0

The electric field component of a uniform plane electromagnetic wave propagating in the $$Y$$-direction in a lossless medium will satisfy the equation

$${{{\partial ^2}{E_y}} \over {\partial \,{y^2}}} = \mu \in {{{\partial ^2}{E_y}} \over {\partial \,{t^2}}}$$

$${{{\partial ^2}{E_y}} \over {\partial \,{x^2}}} = \mu \in {{{\partial ^2}{E_y}} \over {\partial \,{t^2}}}$$

$${{{\partial ^2}{E_x}} \over {\partial \,{y^2}}} = \mu \in {{{\partial ^2}{E_x}} \over {\partial \,{t^2}}}$$

$${{\sqrt {E_x^2 + E_z^2} } \over {\sqrt {H_x^2 + H_z^2} }} = \sqrt {\mu / \in } $$

PREVIOUS NEXT