A reinforced concrete beam has a width of 250mm and a total depth of 450mm. It is reinforced with a total steel area of 1875mm2 placed at an effective depth of 375mm for tension. f'c = 21 MPa and Fy=233 MPa. Find the moment capacity of the beam. 450 375 250 ↑ 250 nAs x/3 fs/n fe ΝΑ T

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Electric Circuit and Components

An electrical circuit or electrical network is a pre-determined pathway to make the electrons flow in the desired direction. The flow of electrons will set up a current flow in the circuit. Normally, the flow of electrical current is opposite to the flow of electrons. An electron is a fundamental sub-atomic particle of an atom possessing a negative charge. To initiate the flow of current and achieve the desired output, the electrical circuit should necessarily be composed of closed pathways. The pathways are made-up of good conductors of electricity such as aluminium and copper.