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Polarization MCQs

Practice Polarization MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1
Electromagnetic TheoryPolarization

The polarization of an electromagnetic wave is specified by the behavior of its?

  • AElectric-field vector
  • BPropagation speed only
  • CMagnetic permeability only
  • DFrequency counter reading
Report an error
Correct Answer: A. Electric-field vector
Explanation: Wave polarization is conventionally defined by the locus and orientation of the electric-field vector at a fixed point.
Reference: Standard electromagnetic theory: polarization
Question 4
Electromagnetic TheoryPolarization

Two orthogonal field components generally produce elliptical polarization when they have?

  • ASuitable unequal amplitudes and/or a phase difference other than the special linear/circular cases
  • BZero frequency only
  • CNo electric field
  • DOnly identical phase and identical direction
Report an error
Correct Answer: A. Suitable unequal amplitudes and/or a phase difference other than the special linear/circular cases
Explanation: Elliptical polarization is the general case for orthogonal components with relative amplitude and phase that do not reduce to linear or circular polarization.
Reference: Standard electromagnetic theory: polarization
Question 5
Antenna & Wave PropagationPolarization

The polarization of an antenna is normally defined by the polarization of the wave it?

  • ARadiates in a specified direction
  • BAbsorbs as heat only
  • CReflects from the ground only
  • DCarries inside a DC cable
Report an error
Correct Answer: A. Radiates in a specified direction
Explanation: Antenna polarization is described by the electric-field polarization of its radiated wave in the direction considered.
Reference: Standard antenna and wave propagation: polarization