Engineering economic analysis can play a significant role in any of the following situations, except a. developing optimal staffing schedule for a commercial building project b. choosing the best design to enhance equipment/machine efficiency c. selecting the suitable robotic arm configuration to improve welding operations d. all of the above e. none of the above

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.