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A Four-cylinder petrol engine has an output of 52 kW at 2000 rev/min. A Morse test is carried out and the brake torque readings are 177, 170, 168, and 174 N m respectively. For normal running at this speed the specific fuel consumption is 0.364 kg/kW h. The of the fuel is 44 2(0 kJ" kg. Calculate the mechanical and brake thermal efficiencies of the engine.
a gaseous mixture consists of 75 methane and 25 ethane by mass. one million cubic feet of this mixture is trapped in
a four-cylinder four-stroke 1.8-liter modem highspeed compression-ignition engine operates on the ideal dual cycle with
1. a well-insulated piston cylinder contains 5kg of saturated mixture water at 150kpa. initially three-quarter of the
A stream consisting of two organic chemicals: 1) Benzene (C6H6) and 2) Toluene (C7H8), enters a separation column. The total mass flow rate of the stream is 10,000 lbm/hr (pounds/hour). The mass percent of benzene in the stream is 40%.
a solo motor cycle ride and passenger together have a mass of 320 kg the combined centre of gravity being 525mm above
A heat exchanger is to heat water (Cp= 4.18 KJ/Kg.C ) from 25 to 60 C at rate of 0.2 kg/s. the heating is to be accomplished by geothermal water ( Cp= 4.31 KJ/Kg.c ) available at 140C at a mass flow rate of 0.3Kg/s. Determine the rate of heat transfe..
Consider the conditions of Example 3.12 for an air environment, except now the air and surroundings temperatures are both 15°C. Humans respond to cold by shivering, which increases the metabolic heat generation rate. What would the metabolic heat ..
you have a heat engine that has a thermal energy resevoir available at 500c the thermal energy to heat the engine is at
Is the process in control? If it is out of control, describe any observed out-of-control pattern.
an opaque horizontal plate has a thickness of l21 mm and thermal conductivity k25 wmk. water flows adjacent to the
a wheel barrow is used to lift a 200 lb load. the length from the wheel axle to the center of the load is 2 ft. the
Estimate the ratio of the elastic moduli of cubic AlSb and cubic ZnSe. Both have the sphalerite structure. The lattice parameters are 0.6136 and 0.5669 nm, respectively.
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