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Check the stability of the closed system whose characteristic equation is given by S^4 +4S³+6S² +2s+3=0.
6. Gas fills a cylinder fitted with a frictionless piston. The initial pressure and volume are 40 MPa and 0.05 dm3 respectively. The gas expands reversibly and polytropically to 0.5 MPa and 1 dm3 respectively. Calculate the index of expansion and the work done.
Suppose that it costs $40,000/yr to get an MBA degree and that non MBAs expect to earn $60,000/yr while MBAs earn $80,000/yr. Assuming an MBA takes two years to finish and that all other costs are negligible, are wages and tuitions in equilibrium (i.e. would your average person strictly prefer one activity (getting an MBA) over another activity (not getting an MBA?). If not, how will markets adjust?
A compressor receives 10kW of power at 600 rpm from a motor. What is the torque acting on the shaft connecting the motor and the compressor?
System :Compressor receiving power from a motor through a shaft
To find : Torque
Known :. Power = 10kW
2. Speed = 600 rpm 1.
4. A spherical balloon of 0.5 m diameter contains air at a pressure of 500 kPa. The diameter increases to 0.55m in a reversible process during which pressure is proportional to diameter. Determine the work done by the air in the balloon during this process. Also calculate the final pressure.
Please refer to the table below for the aspects that need to be covered on the project. Item Description 1 Project aim 2 Project theoretical background 3 Project problem statement 4 Specifications (material to be used for the project) 5 Method used for communication 6 Challenges experienced 7 Number of meetings attended 8 Meetings attendance list attached 9 Calculation of power consumption demand 10 Calculation of size of the PV panel/s (number of PV panels required) 11 Calculation of the inverter size 12 Calculation of the battery size (number of batteries required) 13 Calculation of solar charge controller size EAE3701 MINOR TEST 2 _2021 14 Project layout (block diagram) 15 Recommendations 16 Conclusion 17 If the same system was to be designed in Thailand: Determine the number of PV panels required to perform the same task Is the number of the PV panels used in South Africa the same as the number of the PV panels used in Thailand? If YES/NO why?
An insulated rigid vessel is divided into two parts by a membrane. One part of the vessel contains air at 10 Mpa and other part is fully evacuated. The membrane ruptures and the air fills the entire vessel. Is there any heat and / or work transfer during this process? Justify your answer.
