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For a given size of centrifugal pump casing, if the diameter of the impeller is reduced by 25 percent, how much does the total head capability change?
a large stationary brayton cycle gas-turbine power plant delivers a power output of 100000 hp to an electric generator.
An electric motor is connected to a 12-V battery. The electric current to the motor is 3 A. 90 % of the electric energy from the battery is converted into mechanical work to mix an ideal gas in an adiabatic cylinder.
Compute the total volume V displaced by the chamber - The submersible diving chamber has a total mass of 6.7 Mg including personnel, equipment, and ballast.
liquid water is cooled at a constant pressure of 200 kpa in a piston-cylinder device from a temperature of 110 degc to
Consider the construction of a wind farm composed of 100 wind turbines each with a rated capacity of 2 MW at a rated wind speed of 14 m/s. The turbines have an installed cost of $3000/kW, including the cost of land, and require an operations and main..
Did Tyler make the most economical decision? What other options should Tyler have explored? In your answer, be sure to state your assumptions and quantify your thinking.
What is the horizontal force on the tracks?
Why don't lawn mowers require a battery? Explain how the spark is generated to ignite the air-fuel mixture. What is the purpose of the carburettor? Explain how it works. How is the Venturi Effect utilized?
Ten kilograms of water at 15° C and 700 kPa are contained in a cylinder as shown. Heat is transferred slowly causing the piston to rise. Determine the heat transfer and work done if the final condition is saturated vapor. Show the process on a T-v di..
calculate the number of vacancies per cubic meter in some metal at 688degc. the energy for vacancy formation is 0.87
Consider a 70-kg woman who has a total foot imprint area of 400 cm2. She wishes to walk on the snow, but the snow cannot withstand pressures greater than 0.5 kPa. Determine the minimum size of the snow shoes needed.
A residential heat pump has a coefficient of performance of 2.6. How much heating effect in Btu/h will result when 4.6 hp is supplied to the heat pump?
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