True or false: Flexible couplings are made from hard rubber.

Flexible couplings are typically designed to accommodate misalignments between connected shafts while also dampening vibration and shock loads. While some flexible couplings may indeed incorporate materials such as rubber for flexibility and shock absorption, they are not exclusively made from hard rubber. Instead, they can be produced using a variety of materials, including elastomers, plastics, or metal components, depending on the specific application and requirements.

The assertion that flexible couplings are made from hard rubber does not capture the full range of materials that might be utilized. Many flexible couplings are constructed from softer or different types of rubber and elastomers that provide the necessary flexibility and resilience, thus highlighting the inflexibility in declaring that all flexible couplings are made from hard rubber.

Understanding the diverse application of flexible couplings in various mechanical systems is vital for effective operation and maintenance in power engineering. Their design must suit specific conditions, such as torque requirements and environmental factors.