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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 refrigeration cycle operates continuously and removes energy from the refrigerated space at a rate of 12000 btuh. the
Problems involving viscous dissipation of energy are dependent on viscosity μ, thermal conductivity k, stream velocity Uo, and stream temperature to. Group these parameters into the dimensionless Brinkman number, which is proportional to μ.
Determine Reaction on the cross head guides, Thrust on the crank shaft bearings and (iii) Torque on the crank shaft
nitrogen at 80 kpa and 400 k enters an adiabatic diffuser steadily at a flow rate of 6000 kgh at 230 ms and leaves at
air at 40oc 1 bar and a volumetric flow rate of 60 m3min enters an insulated control volume operating at steady state
Carbon diffuses in iron via an interstitial mechanism—for FCC iron from one octahedral site to an adjacent one. In Section 4.3 (Figure 4.3a), we note that two general sets of point coordinates for this site are 0 ½ 1 and ½ ½ ½ . Specify the family of..
Water at 20°C flows past a circular cylinder in cross-flow at a free stream velocity of 0.5 m/s. The cylinder is 0.02m in diameter and has a length of 0.5m in the cross-stream direction. The cylinder is at a temperature of 60°C. Find the rate at whic..
the motion of a particle is defined by the equations and x 2t t2m and yt2m where t is in seconds.a determine the
Show a graph comparing the centre temperature only against time for different temperatures. Annotate to identify important features and explain the meaning of graph - Write a short summary paragraph highlighting advice you would give to the novice..
a 1 kg block of copper at 350degc is quenched in a 10 kg oil bath initially at ambient temperature of 20degc.
rod bde is partially guided by a roller at d which moves in a vertical track. knowing that the instant shown the
an inward radial flow turbine is to develop 400 hp when supplied with air at 800c and 3 bar abs the exhaust total
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