a. The permeability of a material means A. strength of permanent magnet B. strength of an electromagnet C. the magnetization left in the iron after exciting field has been removed D. the conductivity of a material for magnetic lines of force b. When the magnetic flux (4) and the area (A) under its influence are known, the magnetic flux density (B) can be given as В.В -. A A С. В- D. B = 0A? А. В 3 ФА С. Which of the following is a vector quantity? A. magnetic potential C. magnetic field intensity B. flux density D. relative permeability

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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.