Final answer:
Diseconomies of scale occur when a firm becomes too large and experiences a rise in average costs as output and scale increase. Examples include increased machinery breakdowns, inefficient management, and high production costs.
Step-by-step explanation:
Diseconomies of scale occur when a firm becomes too large and experiences a rise in average costs as output and scale increase. This can happen when the firm becomes difficult to manage, leading to communication issues and disruptions in the flow of work and materials. Examples of diseconomies of scale include increased machinery breakdowns, inefficient management, and high production costs.