The GRAVE DIGGER monster truck has a 1500 horsepower big block motor that turns the steel drive shaft at 1000 revolutions per minute as it crushes cars. Required:
Determine the required outside diameter of the tubular driveshaft to the nearest 1/2 if the wall thickness is 1/4

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater