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1. A heat engine operating on the Carnot cycle has an efficiency of 65%. The waste heat from the cycle is rejected to the atmosphere at 20 deg. C. at a rate of 250 kW. What is the temperature of the heat source driving the engine in deg. C?
2. For the heat engine in the above problem, what is the power output in kW?
the truck travels in a circular path having a radius of 50 m at a speed of 4 ms. for a short distance from s 0 its
the external torque on a drill bit varies as a quadratic function qx2l2 to a maximum intensity where q 100 in.lbin. if
explain temperature change (not conversion) is calculated from Celcius to Fahrenheit to Kelvin.
Hot water is provided to a house by an electric water heater which uses a 60L tank. The electric heater is rated for a 1.6kW. The hot water tank is completely full with water at 80°C when someone starts a shower. The shower faucet mixes cold water at..
Consider a bone plate made of randomly oriented fibers in three dimensions. The fiber and matrix materials are carbon fiber and PMMA. Assume carbon fiber has a modulus of 500GPa and PMMA's elastic modulus is 3 GPa.
A body moves through standard air at 200 m/s. What is the stagnation pressure on the body? Assume (a) compressible flow and (b) incompressible flow.
1 a car with a projected frontal area of 1.8 m2 is traveling at 136 kph. if the drag coefficient of the car is 0.45 and
a room with 42 kg of dry air has 1 kg of water vapor. if the enthalpy of the water vapor at 31 deg celcius is 3406 kjkg
During an expansion process, the pressure of a gas changes from 10 to 97 psia according to the relation P = aV + b where a = 5.1 psia/ft3 and b is constant. If the initial volume of the gas is 7.6 ft3, calculate the work done during the process.
a rankine cycle is used to generate electricity with a total plant capacity of 65 mw. heat from the condenser is
a piston-cylinder contains nitrogen at a temperature of 50 degc a pressure of 500 kpa and a volume of 10 liters. a
two moles of nitrogen are initially at 10 bar and 600 k state 1 in a horizontal pistoncylinder device. they are
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