Only show correct answers. Show question numbers. Highlight correct answers. Which is a commonly accepted value for the lowest voltage that can cause a dangerous electric shock? Why is it unwise to install a ampere fuse in the place of a 5-ampere fuse? Which of these precautions should be taken when installing devices for lightning protection in a coaxial cable feedline? What is one way to recharge a volt lead-acid station battery if the commercial power is out?
In a half-wavelength a radio frequency signal differs by degrees from the source. So, you can also say that the elements are spaced degrees apart. Therefore, when a signal leaving one element reaches the other it is in phase with the radiation from the element it is reaching and thus the output of each element re-enforces the output from the other. That means the pattern is essentially two overlapping circular outputs from the two elements and strengthened in the direction away from the antenna in each direction in line with the axis through the two antenna elements. In other words: a figure-8 oriented along the axis of the array. Memory Tip for Test answers : " degrees" has an 8, so it's a figure eight answer. The signal is "O"ut of phase, so the pattern is "O"riented along the axis.