In a cyclic process the net heat supplied is 70 kJ/s. What is the work obtained from the cycle?
We have \[\oint Q=\oint E+\oint W\]
For a cyclic process \[\oint E=0\]
Therefore \[\oint Q=\oint W\]
So work obtained from the cycle will be equal to 70 kJ/s.
Consider an airplane in an accelerated climb. At a given instant in this climb, the specific excess power is 120 ft/s
Consider an airplane flying at 620 mi/h at 35,000 ft. Calculate its energy height.
For a turbojet-powered airplane with the altitude variation of thrust given by Eq. (3.19), show that as the altitude increases, the maximum velocity decreases.
The BD-5J is equipped with plain flaps. The airfoil section at the wing root is an NACA 64-212, and interestingly enough, it has a thicker section at the tip, an NACA 64-218.
For the BD-5J, calculate (a) The maximum value of CL/CD (b) The maximum value of CL^(1/ 2) /CD
Find the upstream Mach number if there is a entropy increase across the normal shock wave of \(220\,J/\left( {kg.K} \right)\).
What are the advantages of turbojet engine?
The temperature distribution at a certain input of time in concrete slab during curing is given by \(T=3x^{2}+3x+16\) where \(x\) is in \(cm\) and \(T\) is in \(K\). Find the rate of change of temperature with time. \((\alpha=0.003\;cm^{2}/s)\)
The temperature field in a body varies according to the equation \(T(x,y)=x^{3}+4xy\). Find the direction of fastest variation in temperature at the point \((1,0)\).