The aerodynamic drags on two similar trucks are to be tested. One of the trucks is...
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The aerodynamic drags on two similar trucks are to be tested. One of the trucks is installed with an air deflector while another truck is in its original condition as shown in Figure 1. The drag coefficients Cp for the one installed with an air deflector and the original truck are 0.70 and 0.96, respectively. Both trucks are to be tested in standard atmospheric conditions with air density = 1.20 kg/m. Assuming that the trucks are travelling at an average speed of 104 km/h against a headwind of 5 km/h, compare the fuel efficiency in km/liter if both engines can deliver 7.46 kWh/liter at 104 km/h. b = width=3.0 m/ 8.08 Lily 2011 (a) C = 0.70 Lily 2011 (b) Co = 0.96 Figure 1: Two Similar Trucks 3.6 m [20 Marks] The aerodynamic drags on two similar trucks are to be tested. One of the trucks is installed with an air deflector while another truck is in its original condition as shown in Figure 1. The drag coefficients Cp for the one installed with an air deflector and the original truck are 0.70 and 0.96, respectively. Both trucks are to be tested in standard atmospheric conditions with air density = 1.20 kg/m. Assuming that the trucks are travelling at an average speed of 104 km/h against a headwind of 5 km/h, compare the fuel efficiency in km/liter if both engines can deliver 7.46 kWh/liter at 104 km/h. b = width=3.0 m/ 8.08 Lily 2011 (a) C = 0.70 Lily 2011 (b) Co = 0.96 Figure 1: Two Similar Trucks 3.6 m [20 Marks]
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The question is asking for a comparison of the fuel efficiency in kmliter for two similar trucks traveling at an average speed of 104 kmh against a headwind of 5 kmh given that one truck has an air de... View the full answer
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