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A four cylinder four stroke diesel engine has a bore of 212 mm and a stroke of 292 mm. At full load at 720 rev/min the bmep is 5.93 bar and the specific fuel consumption is 0.226 kg/kW h. The air-fuel ratio as determined by exhaust gas analysis is 25/1. Calculate the break thermal efficiency and the engine. Atmospheric conditions are 1.01 bar and 15 degree Celsius and Q net v, for the fuel may be taken as 44200kJ/kg.
a carnot engine operating on air accepts 50 kjkg of heat and rejects 20 kjkg. calculate the high and low reservoir
two materials a and b of the same density are being considered for the design of a large plate that is 2 m wide and 3 m
You have a bevel gear and shaft and you have to find the maximum load that can be applied on it.
an equimolar mixture of n2 and o2 is heated to 2100 k at 1 atm which generates no. calculate the molar values of the
a 3.6 kg rocket body containing 1.59 kg of fuel is attached to a light rigid rod of length r 0.45 m. the rod pivots
in a pharmaceutical plant a copper pipe kc 400 wm.k with inner diameter of 20 mm and wall thickness of 2.5 mm is used
The hydrogen spectrum has a red line at 656 nm and a blue line at 434 nm. What is the first order angular separations between these two spectral lines obtained with a diffraction grating that has 4500 lines per centimeter?
the height of an inaccesible mountain peak c must be estimated. fortunately two smaller mountains a and b which can be
a triangular field with vertices opq has sides op=402m,pq=388m,and qo=254m. find the perpendicular distance from the vertex p to the opposite side.
a spring is stretched 200mm by a 15kg block. if the block is displaced 100mm downward from its equalibrium position and
superheated steam at 10 mpa and 480c leaves the steam generator of a vapor power plant. the power plant is operated by
the wear resistance of a steel shaft is to be improved by nitrogen hardening of its surface. the initial nitrogen
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