Final answer:
To properly match a replacement water pump to the system, a hydraulic engineer (option c) would be the correct professional to make an appraisal. They specialize in fluid mechanics and can ensure the compatibility and performance of the pump within the system.
Step-by-step explanation:
To make sure a replacement water pump is properly matched to the system, an appraisal might have to be made by a hydraulic engineer. A plumber may be involved in the installation and maintenance of a water pump but may not have the specialized knowledge required to appraise the pump's compatibility with an entire system. An appraiser generally deals with the value of property, and an electrician specializes in electrical systems, whereas a hydraulic engineer has the expertise in fluid mechanics necessary to analyze and design water pumps and systems.
One example for which calculating thermal efficiency is of interest is an electric pump. Thermal efficiency refers to the effectiveness with which a system converts the heat or thermal energy into work or output. In the case of an electric pump, thermal efficiency would be a measure of how effectively the pump uses electrical energy to move fluid without excessive heat loss.