The ratio of conduction to displacement current density is referred to as

A)
Dielectric constant
B)
Attenuation constant
C)
Loss tangent
D)
Propagation constant

Correct Answer : Option (C) :   Loss tangent

Explanation : Jc /Jd is a standard ratio, which is referred to as loss tangent given by σ /ε ω. The loss tangent is used to determine if the material is a conductor or dielectric.

Recently Updated in Electromagnetic Field Theory Questions
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

The wave in wave guide has
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

ECE MCQ's

Power Electronics
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Radio Receivers
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Microwave Communication
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