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Estimate the true strain epsilon(zz) at the base of the cylinder, where z is oriented along the cylinder axis. You can assume that the deformation is approximately volume conserving.
Determine the work (kJ) performed by the piston on the ambient environment. Neglect the cross-sectional area of the connecting rod.
Draw a schematic of the turbine as a control volume, label all the mass interactions with the surroundings and calculate the net rate of flow work for this turbine. The turbine functions as a steady
Sketch the cycle indicating the isobars and the isochores. Write down the relationship between the temperatures at the relevant points on the sketch.
The current density is 1000 A/m2. The voltage load is 62% of the reversible voltage. Calculate the fuel consumption rate [kg/hr], and determine the electrode area.
Two hundred of the above cells are connected in series forming a battery that feeds a resistive load rated at 2.5 kW at 100 V. Determine thermal energy generated internally.
Sketch the processes in a P-V diagram. Determine the temperature of the three states in K. Compute the total work in kJ. (d) Compute the total heat transfer in kJ.
For a balloon with a 1m diameter rising in air with standard temperature and pressure determine (a) the velocity if Reynolds number similarity is enforced and (b) the drag force is the drag coeffici
Say you have two lumps of copper, one hot and the other cold. What is the maximum work you could obtain by running a heat engine between them?
An egg can be approximated as a 5.5 cm diameter sphere with rho = 1020 kg/m^3, cp = 3.32 kJ/kg*C. Determine the heat transfer required to increase the egg temperature from 8 C to 80 C.
Determine the resultant of the forces and the distance from the ground to its line of action when (a) P=200N, (b) P=2400N, (c) P=1000N.
Find the maximum height h we can have if the environmental pressure is 100 kPa and temperature is 25C. Take the saturation pressure of water at this temperature as 3.17 kPa.
Compute the ASTM grain size number for this alloy. Be careful, this picture is not taken at 100X. You will first need to calculate the number of grains per square inch at 100X.
Determine the minimum force P required to initiate motion of the block up the incline. m = 10kg, (mu)s = 0.3, (mu)k = 0.1 and = 30.
A cast- iron cylinder of 300mm bore carries a pressure of 30 newtons per square millimitre; what should be its thickness for a unit working stress of 25 newtons per square millimetre?
If the PDF for the drift in volts is f(x) = (3/4)(1-x^2) lxl < 1 , f(x) = 0 lxl > 1 What is the expected value of the Taguchi loss? With the PDF given in b, what fraction of the regulators do
What is thermal energy storage? How does it differ from thermal energy generation? What role do the terms play in a surface energy balance?
Consider the surface of a solid that is at an elevated temperature and exposed to cooler surroundings. By what mode(s) is heat transferred from the surface if (1) it is in intimate (perfect) contact
What two outcomes characterize the response of an opaque surface to incident radiation? Which outcome affects the thermal energy of the medium bounded by the surface and how?
During the same 10 minutes, heat transfer occurs at a constant rate of +10 W from the surroundings. Find delta T, the increase in temperature.
Determine the maximum acceleration of the truck such that the rope doesn't break. Friction is not negligible and static friction and kinetic friction are 0.4 and 0.25, respectively.
During practice, a player P punts a ball B with a speed Vo=25 ft/s, at an angle theta = 60 degrees, and at a height h from the ground.
Calculate the normal stress (positive if tensile and negative if compressive) in the bronze sleeve. The normal strain (positive if stretched and negative if compressed) in the bronze sleeve.
Ammonia vapor flows through a valve. It enters the valve at a pressure of 8 bar and a temperature of 120C and after going through a throttling process it exits at a pressure of 3.5 bar.
The entrance is square edged. Calculate the flow rate if the depth of water in the storage tank is 60.2 feet above the inlet (and outlet) of the pipe.