A radio station has two antennas. The antennas are a distance d apart, where d equals half the broadcast wavelength. The antennas are driven in phase with each other. Let the x-axis be the line that runs through the two antennas. The angles are all measured counterclockwise from the +x-direction. (For the following, assume an observer is positioned a distance D far from the midpoint of the antennas, so that D» d.) (a) In which directions is the strongest signal radiated? 0°, 180° O90°, 270° O0°, 90°, 180°, 270° 45°, 135°, 225°, 315° (b) In which directions is the weakest signal radiated? 0°, 180° O90°, 270° 0°, 90°, 180°, 270° O45°, 135°, 225°, 315°

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter14: Basic Trigonometry And Vectors
Section: Chapter Questions
Problem 1RQ: 1. Which trigonometric function is used to find the angle if the length of the hypotenuse and of the...
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A radio station has two antennas. The antennas are a distance d apart, where d equals half the broadcast wavelength. The antennas are driven in phase with each other. Let the x-axis be the line
that runs through the two antennas. The angles are all measured counterclockwise from the +x-direction. (For the following, assume an observer is positioned a distance D far from the midpoint of
the antennas, so that D » d.)
(a) In which directions is the strongest signal radiated?
O 0°, 180°
90°, 270°
0°, 90°, 180°, 270°
45°, 135°, 225°, 315°
(b) In which directions is the weakest signal radiated?
O 0°, 180°
90°, 270°
0°, 90°, 180°, 270°
45°, 135°, 225°, 315⁰
Transcribed Image Text:A radio station has two antennas. The antennas are a distance d apart, where d equals half the broadcast wavelength. The antennas are driven in phase with each other. Let the x-axis be the line that runs through the two antennas. The angles are all measured counterclockwise from the +x-direction. (For the following, assume an observer is positioned a distance D far from the midpoint of the antennas, so that D » d.) (a) In which directions is the strongest signal radiated? O 0°, 180° 90°, 270° 0°, 90°, 180°, 270° 45°, 135°, 225°, 315° (b) In which directions is the weakest signal radiated? O 0°, 180° 90°, 270° 0°, 90°, 180°, 270° 45°, 135°, 225°, 315⁰
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