Final answer:
Expendability, recoverability, reparability, and cost designator (ERRCD) are criteria in system design that evaluate the quality and feasibility of a design.
Step-by-step explanation:
Expendability, recoverability, reparability, and cost designator (ERRCD) are criteria in system design. These factors are used to evaluate the quality of a design and determine its suitability for meeting desired needs within realistic constraints.
Expendability refers to the ability to replace or add components to a system without significantly impacting its functionality or performance.
Recoverability pertains to the ability to restore a system to its normal functioning state after a failure or disruption.
Reparability involves the ease and cost-effectiveness of fixing or repairing a system or its components.
Cost designator (ERRCD) is a measure used to assign a cost value to different design options, taking into account factors such as materials, manufacturing processes, and labour.