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Explain any anomalies - differences from theory or what you thought should happen. Is a linear approximation sufficient to describe and predict the relationship between load and output voltage?
An air conditioner in the airport of Timbuktu runs a cooling system using R-410a with a high pressure of 1500 kPa and a low pressure of 200 kPa. It should cool the desert air at 45 degrees C down to 15 degrees C. Find the cycle COP. Will the syste..
Superheated water vapour at 180 psia and 500 degrees Farenheit is allowed to cool at a constant volume until the temperature drops to 250 degrees Farenheit. At the final state, determine
During the process, the pressure and specific volume are related by pv = constant. For the refrigerant, determine the work and heat transfer per unit mass, each in KJ/kg.
A 782 pound 4WD vehicle is designed to clime a 16 degree ramp. What is the minimum acceptable coefficient of friction between its tires and the ramp surface?
The heating is to be done in a mixing tank by direct injection of the steam, all of which condenses. Determine the two inlet mass flows needed to meet the desired hot water flow rate.
A 4 m diameter sphere is embedded in insulation. The sphere contains a liquid-ice mixture maintained at 0 deg C. The ambient temperature surrounding the insulation is 25 deg C.
At the end of the isothermalexpansion, the pressure is 600 kPa and the volume is 0.4 m3. Assuming the ideal gas model for air, determine the thermal efficiency.
Steam at 15 bar and 350 degrees C is expanded through a 50% reaction turbine to a pressure of 0.14 bar. The stage efficiency is 80% for each stage and the reheat factor is 1.05.
A similar measurement is made applying the force parallel to one of the cube axes. Explain why the two measurements give different values of the elastic modulus.
Air in piston/cylinder at 200 kPa, 600K is expanded in a constant-pressure process to twice the initial volume (state 2). At this point, the piston is locked with a pin and heat is transferred to a final temperature of 600K. Find the work and heat..
determine the slenderness ratio of a 5 m column with built end if its cross section is a circular with a radius of 40 mm and b 50 mm square use the concept of effective length.
Find the shaft ID needed to obtain a maximum deflection at the center of 3 mm if the shaft OD is 22 cm. Assume the shaft to be the same length between supports as the length of the paper roll.
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