Q. Which of the following is the most necessary for an electric field to exist?

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Q. What happens to the electric field between two conductors when the permeability of the material between the plates is increased?

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Q. Which of the following is not true?

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Q. The radiation from an open line can be increased by bending to which of the following angle?

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Q. What is the ratio of the electric field strength of a radiated wave to the magnetic field strength called?

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Q. The fields in the Fresnel zone are radio waves that contain the information transmitted.

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Q. At what distance from the antenna does the far field start?

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Q. The Far field is also known as ______________

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Q. An Em wave is said to be vertically polarized when the angle between the electrical field and earth is _______

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Q. Which of the following is not true?

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Q. What happens when a vertical or horizontal polarized antenna receives a circular polarized wave?

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Q. Which of the following devices assist in using the same antenna for transmission and receiving?

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Q. A dipole antenna is also called as?

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Q. The impedance at the center of the antenna is known as?

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Q. What happens when the radiation resistance of the antenna matches the characteristic impedance of the transmission line?

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Q. The type of dipole antenna that has a higher band width is called as?

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Q. The radiation pattern of a half-wave dipole has the shape of a ______

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Q. What is the beam width for a half wave dipole antenna?

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Q. What does the beam width of an antenna tell us?

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Q. What is the power radiated by the antenna with gain called as?

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