3) A linkage has the following link lengths: O3A=3", AB= 8", O.B= 6", 0,0= 7". vi. Find out if the linkage is a Grashof mechanism. vii. If the O;A link is the driver, which Grashof kinematic inversion is obtained. viii. Find the corresponding extreme transmission angles (minimum and maximum).

A 4 stroke four cylinder engine is tested while running at 4000 rpm. The inlet air is at 25ºC and pressure is 750 mm of Hg. The piston displacement for each cylinder is 299cc. The A/F ratio is 15:1 and BSFC is 325 g/kWh. The dynamometer reading shows a power out of 80 hp. Assume the calorific value of the fuel as 43 MJ/kg. Find i) Volumetric Efficiency ii) Brake Thermal Efficiency iii) Total Fuel Consumption iv) Brake Mean effective Pressure

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Please solve both,It's Simple question. Include expression and calculation for both