Gauss law can be evaluated in which coordinate system? - Electromagnetic Field Theory

Electronics and Communication Engineering (ECE) : Electromagnetic Field Theory - Quiz(MCQ)

Gauss law can be evaluated in which coordinate system?

A)

Cylinder

B)

Spherical

C)

Cartesian

D)

Depends on the Gaussian surface

Correct Answer : Option (D) : Depends on the Gaussian surface

Explanation : The Gauss law exists for all materials. Depending on the Gaussian surface of the material, we take the coordinate systems accordingly. Suppose if the material is a coaxial cable, the Gaussian surface is in the form of cylinder. Thus we take Cylinder/Circular coordinate system.

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Radiation intensity in a given direction is the

A)

Energy radiated per square metre

B)

Power radiated per square metre

C)

Power radiated per unit solid angle in that direction

D)

None of the above

Correct Answer : Power radiated per unit solid angle in that direction

Which of the following impedance inversion is obtained?

A)

Balun transformer

B)

A quarter wave line

C)

Short-circuited stub

D)

A half wave line

Correct Answer : A quarter wave line

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A)

Larger frequency than in the free space

B)

Diminishing wavelength than in the free space

C)

Group velocity inversely proportional to wavelength

D)

Larger wavelength than in the free space

Correct Answer : Larger wavelength than in the free space

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