A dynamometer is a device used to measure force, torque, or power in various mechanical systems. It helps engineers and technicians assess the performance of engines, motors, and other machinery by providing accurate readings of their output. This information is crucial for optimizing performance and ensuring safety in applications ranging from automotive testing to industrial machinery. There are different types of dynamometers, including absorption dynamometers and transmission dynamometers. Absorption dynamometers measure the power output of an engine by absorbing the energy produced, while transmission dynamometers assess the power transmitted through a system. Both types play a vital role in research and development across various industries.