Calculate the high and low reservoir temperatures
A carnot engine operating on air accepts 50 kj/kg of heat and rejects 20 kJ/kg. Calculate the high and low reservoir temperatures if the maximum specific volume is 10 m^3/kg and the pressure after the isothermal expansion is 200 kPa.
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A water tank has an inflow line 1 ft diameter and two outflow lines of 0.5 ft diameter. The velocity in the inflow line is 5 ft/s. The velocity out one of the outflow lines is 7 ft/s.
Determine: (a) the total rate of change in exergy of the steam passing through the turbine, and (b) the exergetic efficiency of the turbine.
Jet-type pumps are sometimes used for special purposes, such as to circulate the flow in basins in which fish are being reared. The use of a jet-type pump eliminates the need for mechanical machinery that might injure the fish.
Assuming that the time interval includes the left limit and all the times up to but not including the right limit, estimate the probability that an inventor has a good idea during the time interval from 6pm-midnight. Write answer as a fraction in
Heat is now added to the air, determine the work done by the air and the total heat transferred when the volume doubles. Also show the process on a P-v diagram.
What are the appropriate null and alternative hypotheses to test whether the mean for population 2 is larger that that for population 1.
The components are to be linked to one another with a uniqu linakge system that adds nothing to overall sphere-cylinder-float vertical dimension. What size float (length and diameter) is needed if the float is a cylinder with its longitudinal axis
According to the central limit theorem what should the theoretical mean and standard deviation be for each of these sample sizes?
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