computer room located on the second floor of a five-storey office building is 10 m x 7 m. The exterior all is 3.5 m high and 10 m long; it is a metal curtain wall (steel backed with 10 mm of insulating oard), 75 mm of glass fiber insulation, and 16 mm of gypsum board. A double-glazed window make p 30% of the exterior wall. The indoor temperature is 20 Celsius. calculate the cooling load at 8pm ith calculation safety factor of 1.25. etails about appliances and lightings: Computer: 200 watts, 5numbers, operating 8hrs every day

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Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.