Answer: Laplace equation provides a linear solution and helps in obtaining other solutions by being added to various solution of a particular equation as well.
Inviscid , incompressible and irrotational field have and basic solution ans so they can be governed by the Laplace equation to obtain a interesting and non-common solution .The analysis of such solution in a flow of Laplace equation is termed as potential flow.
Answer:
Thermal efficiency of cycle = 0.314
Quality of exhaust steam = 0.959
Explanation:
Answer:
No.
Explanation:
The Coefficient of Performance of the reversible heat pump is determined by the Carnot's cycle:
![COP_{HP} = \frac{T_{H}}{T_{H}-T_{L}}](https://tex.z-dn.net/?f=COP_%7BHP%7D%20%3D%20%5Cfrac%7BT_%7BH%7D%7D%7BT_%7BH%7D-T_%7BL%7D%7D)
![COP_{HP} = \frac{297.15\,K}{297.15\,K-280.15\,K}](https://tex.z-dn.net/?f=COP_%7BHP%7D%20%3D%20%5Cfrac%7B297.15%5C%2CK%7D%7B297.15%5C%2CK-280.15%5C%2CK%7D)
![COP_{HP} = 3.339](https://tex.z-dn.net/?f=COP_%7BHP%7D%20%3D%203.339)
The power required to make the heat pump working is:
![\dot W = \frac{300\,kW}{3.339}](https://tex.z-dn.net/?f=%5Cdot%20W%20%3D%20%5Cfrac%7B300%5C%2CkW%7D%7B3.339%7D)
![\dot W = 89.847\,kW](https://tex.z-dn.net/?f=%5Cdot%20W%20%3D%2089.847%5C%2CkW)
The heat absorbed from the exterior air is:
![\dot Q_{L} = 300\,kW - 89.847\,kW](https://tex.z-dn.net/?f=%5Cdot%20Q_%7BL%7D%20%3D%20300%5C%2CkW%20-%2089.847%5C%2CkW)
![\dot Q_{L} = 210.153\,kW](https://tex.z-dn.net/?f=%5Cdot%20Q_%7BL%7D%20%3D%20210.153%5C%2CkW)
According to the Second Law of Thermodynamics, the entropy generation rate in a reversible cycle must be zero. The formula for the heat pump is:
![\frac{\dot Q_{L}}{T_{L}} - \frac{\dot Q_{H}}{T_{H}} + \dot S_{gen} = 0](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cdot%20Q_%7BL%7D%7D%7BT_%7BL%7D%7D%20-%20%5Cfrac%7B%5Cdot%20Q_%7BH%7D%7D%7BT_%7BH%7D%7D%20%2B%20%5Cdot%20S_%7Bgen%7D%20%3D%200)
![\dot S_{gen} = \frac{\dot Q_{H}}{T_{H}} - \frac{\dot Q_{L}}{T_{L}}](https://tex.z-dn.net/?f=%5Cdot%20S_%7Bgen%7D%20%3D%20%5Cfrac%7B%5Cdot%20Q_%7BH%7D%7D%7BT_%7BH%7D%7D%20-%20%5Cfrac%7B%5Cdot%20Q_%7BL%7D%7D%7BT_%7BL%7D%7D)
![\dot S_{gen} = \frac{300\,kW}{297.15\,K}-\frac{210.153\,kW}{280.15\,K}](https://tex.z-dn.net/?f=%5Cdot%20S_%7Bgen%7D%20%3D%20%5Cfrac%7B300%5C%2CkW%7D%7B297.15%5C%2CK%7D-%5Cfrac%7B210.153%5C%2CkW%7D%7B280.15%5C%2CK%7D)
![\dot S_{gen} = 0.259\,\frac{kW}{K}](https://tex.z-dn.net/?f=%5Cdot%20S_%7Bgen%7D%20%3D%200.259%5C%2C%5Cfrac%7BkW%7D%7BK%7D)
Which contradicts the reversibility criterion according to the Second Law of Thermodynamics.
Answer:
The given statement "A negative normal strain can be considered to increase or decrease volume depending on coordinate system used" is
b) False
Explanation:
Normal strain refers to the strain due to normal stress which is when the applied stress is perpendicular to the surface.
Negative normal strain results in compression or contraction further leading to a decrease in volume while a positive normal strain results in elongation thus giving rise to an increase in volume.