Determine the entropy change of the air during the process
Air is compressed by a 30 kW compressor from P1 to P2. The air temperature is maintained constant at 25 oC during this process as a result of heat transfer to the surroundings at 17 oC. Determine the entropy change of the air.
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An 8 Ohm speaker is connected across the output terminals of a power amplifier that delivers 72 W. What is he current supplied to the speaker (in A)?
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The air temperature is maintained constant at 25 oC during this process as a result of heat transfer to the surroundings at 17 oC. Determine the entropy change of the air.
A resistor operated at 100V generates Joule heat at a rate of 20W. When placed across a 220V source, it will draw a current of:
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Determine the nature of the first phase change that eventually occurs in the system as a result of this process, and b. determine the pressure st which this phase change occurs.
A single square loop of wire has a resistance of 2 Ohm. The length of each side of the square is 0.5m. A magnetic field whose direction makes an angle of 45 degrees with the normal to the plane of the loop increases at a rate of 10 milliTesla/s. W
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