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A heat engine receives heat from a source at 1000°C and rejects the waste heat to a sink at 50°C. If heat is supplied to this engine at a rate of 100 kJ/s
A heat engine cycle is executed with steam in the saturation dome between the pressure limits of 5 and 2 MPa.
A heat exchanger is to heat water (cp = 4.18 kJ/kgC) from 25 to 60°C at a rate of 0.2 kg/s. The heating is to be accomplished by geothermal water
A heat pump cools a house at 20?C with a maximum of 1.2 kW power input. The house gains 0.6 kW per degree temperature difference to the ambient
A heat exchanger is used to heat cold water at 15°C entering at a rate of 2 kg/s by hot air at 100°C entering at a rate of 3 kg/s
A heat engine that receives heat from a furnace at 1200°C and rejects waste heat to a river at 20°C has a thermal efficiency of 40 percent.
A heat engine receives heat from a source at 1500 K at a rate of 700 kJ/s and it rejects the waste heat to a medium at 320 K.
What kinds of characteristics and skills do successful IT managers generally possess?
Assuming both the turbine and the compressor to be isentropic and using constant specific heats at room temperature, determine
A gasoline line is connected to a pressure gage through a double-U manometer, as shown in Fig. if the reading of the pressure gage is 370 kPa
A gasoline engine is converted to run on propane. Assume the propane enters the engine at 25?C, at the rate 40 kg/h. Only 90% theoretical air enters
A gaseous fuel with a volumetric analysis of 60 percent CH4, 30 percent H2, and 10 percent N2 is burned to completion with 130 percent theoretical air.
A gaseous fuel with 80 percent CH4, 15 percent N2, and 5 percent O2 (on a mole basis) is burned to completion with 120 percent theoretical air
Assuming the turbine to be isentropic and the compressor to have an isentropic efficiency of 80 percent, determine the net power output of the plant.
A gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 700 kPa.
A gas-turbine engine with regeneration operates with two stages of compression and two stages of expansion.
A glass is cleaned in 45oC hot water and placed on the table bottom up. The room air at 20oC that was trapped in the glass gets heated up to 40oC
A geothermal power plant uses geothermal liquid water at 160°C at a rate of 440 kg/s as the heat source, and produces 14 MW of net power in an environment
A gasoline engine takes air in at 290 K, 90 kPa and then compresses it. The combustion adds 1000 kJ/kg to the air after which the temperature is 2050 K.
Access controls are good things and should be secure, but programmers continually add "backdoor access" to their programs.
A gas contained within a piston-cylinder assembly undergoes three processes in serial:
A gas is contained in a vertical, frictionless piston-cylinder device. The piston has a mass of 4 kg and a cross-sectional area of 35 cm2.
A gas is compressed from an initial volume of 0.42 m3 to a final volume of 0.12 m3. During the quasi-equilibrium process, the pressure changes with volume
A gas occupying a volume of 25 ft3 weights 3.5 lbs on the moon, where the acceleration of gravity is 5.47 ft/s2
A frictionless piston-cylinder device contains 2 kg of nitrogen at 100 kPa and 300 K. Nitrogen is now compressed slowly according to the relation