Would layer of rust on pipe wall protrude through viscous
Water at 10 degrees C flows throug a smooth 60-mm-diameter pipe with an average velocity of 8m/s. Would a layer of rust of height 0.005mm on the pipe wall protrude through the viscous sub layers? Explain.
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Liquid water enters a pump at 15°C, 100 kPa, and exits at a pressure of 5 MPa. If the isentropic efficiency of the pump is 75%, determine the enthalpy of the water at the pump exit, in KJ/kg.
Heat in the amount of 100 kJ is transferred directly from a hot reservoir at 1200 K to a cold reservoir at 600 K. Calculate the entropy change of the two reservoirs and determine if the increase of entropy principle is satisfied.
A diesel engine has a state before compression of 95 kpa, 290 k, a peak pressure of 6000 kpa, and a maximum temperature of 2400 K. Find the volumetric compression ratio and the thermal efficiency.
Consider a system operating a power cycle between thermal reservoirs at temperatures Th and Tc where Th>Tc. Using 1st and 2nd law of thermodynamics, derive the maximum thermal efficiency possible.
We want to achieve a concentration of 0.5%wt of carbon at a depth of 0.2 mm below the surface of the slab of a metal. The initial concentration of carbon in the metal is 0.1wt%.
Determine the number of recorders the manager should order each month to meet 90% of customer demand.
A single metallic crystal is oriented such that the normal to the slip plane and slip directions are at angles of 50 and 40 degrees respectively, with the tensile axis.
If the equation for the regression line is y'=7-9X, then a value of x=-1 will result in a predicted value for y of
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