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The temperature rise is brought about adiabatically by stirring the air with a paddle wheel. Deteremine in kJ/kg.K the amount of entropy produced.
Determine the maximum temperature, the cutoff ratio, the net work output per unit mass of air, the thermal efficiency of the cycle, and the mean effective pressure.
Based upon the manufacturer's battery population average life time and standard deviation, determine the probabilities that a battery lifetime will be less than 1.9 years and between 3 and 4 years.
The exhaust of each turbine is cooled to near saturated liquid conditions at 4 psia in a single condenser. Assuming this PWR operates on an ideal Rankine cycle, calculate the power transferred by th
Indicate on Mohr's plane the maximum shear stress criteria of failure. Describe the physical test(s) on which the maximum shear stress failure theory limit is based.
Determine: The maximum in-plane shear strain and the maximum in plane shear stress; The pressure (p) inside the tank; and The principal stresses and the absolute maximum shear stress in the wall of
Determine the size of motor you would recommend to drive the following pumps. A feedwater pump rated at 30,000kg/min of water at 90deg C from 70-kPa pressure to 1000-kPa pressure.
Compute the speed of the person as a function theta for 0 <= theta <= 180. In addition, find the speed of the person for theta = 0(degrees).
Determine for the cycle the mass flow rate of steam entering the first stage of the turbine and the rate of heat transfer to the working fluid passing through the steam generator.
Estimate the pressure in kPa from (a) the ideal gas equation, (b) the Van der Waals equation, and (c) the Beattie-Bridgeman equation of state.
At that point the flow rate is 4 kg/s through a 4-cm-diameter pipe. Design criteria call for the average flow velocity to be less than 15 m/s. Will these conditions meet the design?
Calculate the final temperature and the specific work required (i.e., work per kg of flow). Compare this to an isentropic compression from the same inlet conditions to the same final pressure.
Each pump is rated at 515 m3/min when producing a pressure rise equal to a pressure head of 20 meters of water. Treating the pumps as adiabatic, calculate the minimum power required to drive each pu
What volume does mass of the boiled-off natural gas occupy if the temperature is 15°C at 100 kPa pressure, assuming ideal gas behavior?
Determine the work required to compress air in an isentropic steady-flow process from 50 kPa to 500 kPa. What is the exit temperature if the inlet temperature is -18.15°C?
There is no heat transfer between the heater and the surroundings. Evaluate each term in the general entropy balance for the second law of thermodynamics.
Given: temperature of the hot loop Tin=36.70C Tout=73.738C, Hot flow: 2.985 gal/min temperatures of the cold loop Tin= 14.42C Find amount of heat produced by furnace.
Also determine the minimum coeffecient of static friction compatible with this motion. Assume that the mass is evenly distributed bewteen the right.
Estimate the minimum collector area (ft^2) required for a plant producing 1kW of useful shaft power when the atmospheric temperature is 70 degrees F?
If the overall heat transfer coefficient is 880 W/m2 K, determine the rate of heat transfer and the heat transfer surface area of the heat exchanger.
Specify the diametral pitch, the number of teeth on each gear, the pitch diameters, the center distance, the face width, and the material from which the gears are to be made.
Design a v-belt/chain drive which limits the top speed to approximately 17.5 mph given the outside diameter of the drive wheel is 16 inches.
The coefficient of restitution between each car is 0.8. Determine the velocity of car C so that after car B collides with car C the velocitty of car B is zero.
The bell-crank mechanism consists of a bent rod and an attached 5-kg weight. Find the spring constant, k and damping coefficient.
Given: temperature of the hot loop Tin=36.70C Tout=73.738C, Hot flow. Find amount of heat generated by ideal combustion of fuel ( Type 2 oil heating value: 139400 Btu/gal)