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A petrol engine uses 20/4 kg of petrol/h of calorific value 43 MJ/kg. The thermal efficiency of the engine is 20%. Determine the power output of the engine and the energy rejected/min.
the pressure drop between the entrance and exit of a 150 mm diameter 90deg elbow through which ethyl alcohol at 20degc
An ideal vapor-compression refrigeration cycle uses R-134a as the working fluid in an air-conditioning system. The refrigerant enters the compressor as a saturated vapor at 40 °F
it is 30degf outside. the temperature of the outside surface of a building is 33degf. the thickness of the building
A 4 m diameter sphere is embedded in insulation. The sphere contains a liquid-ice mixture maintained at 0 deg C. The ambient temperature surrounding the insulation is 25 deg C.
steam is flowing in a line at 100 bar. it is flashed out through a valve to 1 bar pressure. the temperature of the
Determine the maximum normal stress in a 300-mm diameter basketball that has a 2-mm wall thickness after it has been inflated to a pressure of.
Determine the minimum coefficient of static friction between the crate and the truck so that the crate does not slide relative to the truck.
1. assuming that the diameters of 1000 brass plugs taken consecutively from a machine form a normal distribution with
one axis of a rrl robot is a linear slide with a total range of 950mm. the robotrsquosnbspcontrol memory has a 10 bit
Motor coming to rest, A motor is running at 12 rpm and the switch is flipped and cuts the power. The rotor weighs 75 lbs.
a train made up of 3 cars of weight 60000 lb each connected by coupling springs of stiffness 15000 lbin. is released by
Now our robotics team is trying to tighten one of the ¼" - 20 UNC bolts to hold on the wheels. They are using a wrench that is 6" long. They exert 10 lbs to pull the wheel toward its axle with 110 lbs of force. Fill in the values for this s..
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