A design engineer must select the horsepower for a motor to drive a pump. Horsepower rating is a continuous design parameter with values in the range of 0 to 30 horsepower. The motor will have an annual ownership cost of $80 plus $0.20 per horsepower. The operating costs of such motors for one horsepower-hour will be $0.025 divided by the horsepower rating. 3,000 horsepower hours will be needed per year. a. Determine what horsepower should be specified for a minimum total annual cost. b. How do you know that you have minimized total cost per year? horsepower. (Round to the nearest whole a. To minimize total annual cost, the horsepower for the motor should be number.) A design engineer must select the horsepower for a motor to drive a pump. Horsepower rating is a continuous design parameter with values in the range of 0 to 30 horsepower. The motor will have an annual ownership cost of $80 plus $0.20 per horsepower. The operating costs of such motors for one horsepower-hour will be $0.025 divided by the horsepower rating. 3,000 horsepower hours will be needed per year. a. Determine what horsepower should be specified for a minimum total annual cost. b. How do you know that you have minimized total cost per year? horsepower. (Round to the nearest whole a. To minimize total annual cost, the horsepower for the motor should be number.)