Question: A dynamometer is used to determine the power transmitted to the wheels of an electric car by simultaneously measuring the torque T and angular rotation
A dynamometer is used to determine the power transmitted to the wheels of an electric car by simultaneously measuring the torque T and angular rotation rate of the wheels. The power P is determined according to P T With the cars settings held constant, the following measurements are made: T Nm radsa points Calculate the mean torque T and standard deviation of the torque, ST b points Determine the random uncertainty of the torque, with confidence. c points Calculate the mean rotation rate and standard deviation of the rotation rate Sd points Determine the random uncertainty of the rotation rate, with confidence. e points Calculate the mean power P and standard deviation of the power SP f points Determine the random uncertainty of the power, with confidence. g points According to its manufacturer, the dynamometer measures both torque and rotation rate with accuracy of the reading, with confidence. Determine the systematic uncertainty in the power measurement. h points Determine the total uncertainty in the power measurement at confidence. i points To reduce the total uncertainty, what would you do first? j points Which, if any, of the measurements of torque and rotation rate are outliers, according to Thompsons test?
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