[amp_mcq option1=”Efficiency” option2=”Sensitivity” option3=”Flexibility” option4=”Modular limit” correct=”option1″]
The correct answer is A. Efficiency.
Efficiency is the ratio of the output to the input. In the context of the question, the output is the head recovered and the input is the head put in. Therefore, the efficiency is the ratio of the head recovered to the head put in.
Sensitivity is the degree to which a system responds to changes in its input. Flexibility is the ability to adapt to change. Modular limit is the maximum size of a module that can be used in a modular system.
Efficiency is a more relevant concept than sensitivity, flexibility, or modular limit in the context of the question.