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Calculate the operational availability for a power generator with 1 scheduled maintenance per 1000 hours of operation and failure rate of 0.6 failures per 1000 hours. Preventive maintenance takes on average 8 hours, however if the engine fails, it typically takes 26 hours to repair it. Logistics and administrative delays typically add extra 12 hours to the maintenance time.
An adiabatic piston cylinder contains 1 kg of R-134a. Initially the conditions inside the piston are 200 kPa and 0 degrees C. An electric heater inside the device runs with constant voltage of 110 V and a constant 0.1A of current for one hour.
the ultimate analysis of a no.4 fuel oil is 86.47 wt carbons. 11.65 hydrogen 1.35 sulfur and the balance noncombustible
air is expanded in an adiabatic nozzle by a reversible polytropic process with n 1.3. it enters this nozzle at 100
a hollow steel shaft g 77.2 gpa allowable stress 50 mpa outer diameter 60 mm inner diameter 25 mm length 5 m
you must explicitly state your research questions and summarise your proposal and rationale. Your introduction must contain the following information: a brief outline of the topic being addressed in this work.
air enters a tank through an area of 0.2 ft2 with a velocity of 15 fts and a density of 0.03 slugft3. air leaves with a
a 55 horsepower 1800 rpm electric motor is connected to a speed reducer with a ratio of 171. neglecting friction in the
a water pump is attached to an electric motor. the inlet and outlet diameters of the pump are the same. the volume flow
a 2mm straight stockpiece of steel has a 90dbend. the total length of the unbent piece was 64mm. from the end of the
the velocity distribution over the surface of a sphere upstream of a separation point u1.5 usintheta where u is the
In a cold air-standard Brayton cycle, air enters a compressor operating at steady state at 15 lb/in2, 80 degress F, with a volumetric flow rate of 6000 ft3/min. The compression occurs in two stages and the pressure ratio across each stage is the same..
Air, initially at 220 kPa and 450 K undergoes a polytropic state change to 374 kPa and 495 K. What is the polytropic exponent of this process? Saturated water vapor is contained in a rigid container. Heat is then added until the pressure and temperat..
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