Electromagnetics [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 79 - 81 of 96

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Question 79

Electromagnetics
Differential and Integral Forms and Their Interpretation

Appeared in Year: 2017

Question

MCQ▾

Two conducting spheres and of radii a and respectively, are placed apart and connected by a long, thin conducting wire, as shown in the figure.

Placed Apart and Connected by a Long, Thin Conducting

For some charge placed on this structure, the potential and surface electric field on are and , and that on are and respectively. Then, which of the following is CORRECT?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 80

Electromagnetics
Polarization, Phase and Group Velocity

Appeared in Year: 2016

Question

MCQ▾

Let the electric field vector of a plane electromagnetic wave propagating in a homogenous medium be expressed as where the propagating constant is a function of the angular frequency . Assume that and are known and are real. From the information available, which one of the following Cannot be determined?

Choices

Choice (4)Response

a.

The power flux through the plane.

b.

The phase velocity of the wave.

c.

The group velocity of the wave.

d.

The type of polarization of the wave.

Question 81

Electromagnetics
Polarization, Phase and Group Velocity

Appeared in Year: 2015

Question

Numeric Answer▾

The electric field component of a plane wave traveling in a lossless dielectric medium is given by . The wavelength (in m) for the wave is …

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