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Electrical current is passed through a resistor immersed in a liquid in an adiabatic container. The temperature of the liquid is varied by 1°C. The system consists solely of the liquid. Does heat or work flow across the boundary between the system and surroundings? Justify your answer.
A hydroelectric turbine passes 2 million gal/min through its blades. If the average velocity of the flow in the circular cross-section conduit leading to the turbine is not to exceed 30 ft/s, determine the minimum allowable diameter of the conduit..
refrigerant 134-a flows through a compressor at a rate of 0.125 kgs. the compressor inlet conditions are 140 kpa and
a 14 mm diameter 50 mm long mild steel rod undergoes a stress test. a tensile force of 18800 n is applied and the rod
a gearmotor operating clockwise at 180rpm is coupled through a no. 80 chain drive tgo an escalator. the drive sprocket
a structural support is installed within a space craft. the support is made of 7075-t6 aluminum plut t-ult 250 mpa and
one kilogram of carbon dioxide is compressed from 1 mpa and 200 degrees celsius to 3 mpa in a piston cylinder devise
A hob that has a pitch diameter of 76.2 mm is used to cut a gear having six teeth. If a cutting speed of 27.4 m/min is used, what will be the rpm value of the gear blank?
A hydraulic cylinder is 100mm diameter and is fed by a pipe 15mm in diameter. If the piston in the cylinder moves forward at a rate of 0.2ms^1
What strategies could be used to counteract the increased Nitric oxides emissions with ethanol blended petrol?
a de-superheater works by injecting liquid water at 20 degrees c into a 10 kgs stream of superheated water vapor at 300
say you have two lumps of copper one hot and the other cold. what is the maximum work you could obtain by running a
At the frequency at which the line operates, the reactance of the load is -j50 Ω and the phase constant on the line is 20π rad/m. Calculate and plot the line impedance as a function of distance from load.
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