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1. Congress has mandated the average fuel economy for passenger cars sold in the United States to be 35 miles per gallon beginning in 2020. In Europe, the goal is 47 miles per gallon by 2012. In each case, identify the major factors spurring legislative action, including, as appropriate, technical, economic, societal, and political factors. Analyze the disparity between these goals. Comment on their likely effectiveness in achieving the respective legislative aims. Report your findings in a PowerPoint presentation.
2. Automotive gas turbines have been under development for decades but have not been commonly used in automobiles. Yet helicopters routinely use gas turbines. Explore why different types of engines are used in these respective applications. Compare selection factors such as performance, power-to-weight ratio, space requirements, fuel availability, and environmental impact. Summarize your findings in a report with at least three references.
A rectangular casting having the dimensions 3 inch by 5 inch by 0inch solidifies completely in 11.5min. Using n=2 in 2 in Chvorinov’s rule, calculate the mold constant B. Then compute the solidification time of a 0.5inch by 8inch by 8inch casting pou..
A rigid tank A of volume 0.6 m^3 contains 3 kg of water at 120 degrees C, and rigid tank B has a volume of 0.4 m^3 with water at 600kPa and 200 degrees C. The tanks are connected to a piston/cylinder initially empty with closed valves.
the position of a crate sliding down a ramp is given by x 0.25t3 y1.5t2 z6-0.75t2.5 all in units of m where t is in
one would like to find preheat 2 tons h of a solution with a specific heat capacity of 3.35 kj kg k from 15 c to 70
The cold cranking amperes (CCA) of a conventional lead-acid automobile battery is the amount of current the battery can provide at 0°F for 30 seconds and maintain at least 1.2 volts per cell (or 7.2 volts for a standard 12-volt battery). If a batter..
a refrigeration cycle is a reversed heat engine. which of the following has the maximum value of the co-efficient of
a wheel can be modeled as a thin ring having mass 10 kg and four spokes made of slender rods each of mass 2 kg. the
Three kilograms of nitrogen (N2) initially at 47C and 2 bar is contained within a rigid, insulated tank. The nitrogen is stirred by a paddle wheel until its pressure doubles. Employing the ideal gas model with constant specific heat evaluated at 300K..
A proposed heat pump design creates a heating effect of 28 kw while using 5 kw of electrical power. The thermal energy reservoirs are at 313k and 256k. Is this possible according to the increase of entropy principle. What is the delta S in kw/k to fi..
Knowing the allowable normal stress due to bending +110 MPa in tension and -150 MPa in compression, find the largest permissible value load W if beam AB is not overstressed.
a cylindrical specimen of a titanium alloy having an elastic modulus of 107 gpa 15.5 times 106 psi and an original
Refrigerant 22 enters the valve of a refrigeration system with a pressure of 14 bars and a temperature of 32 C and exits at a pressure of 4 bars. Neglecting heat transfer and any changes in potential and kinetic energy, determine the quality of the r..
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