Wheatstone bridge as shown in Figure Q4(a) consists of four resistive arms forming a closed circuit with DC voltage source applied to two opposite junctions and a current detector connected to the other two junctions. a) Voltage source Current detector Figure Q4(a) i) ii) State ONE (1) application for each AC and DC Wheatstone bridge. Formulate the equation_for the unknown components, R. at a balanced condition for DC bridge.

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Antenna Array

An antenna array is a group of antennas joined together and arranged in a regular pattern to form a single antenna capable of producing radiation patterns that individual antennas cannot. As the antennas are constructed as an array, sufficient spacing and phase must be given.