Question

The most economical type of lining is the one which shows ____________

(a) minimum benefit-cost ratio

(b) maximum benefit-cost ratio

(c) zero benefit-cost ratio

(d) benefit-cost ratio = 1

I have been asked this question by my college professor while I was bunking the class.

This interesting question is from Canal Lining topic in section Lining of Irrigation Canals and its Economics of Irrigation Engineering

Answer 1

Right answer is (b) maximum benefit-cost ratio

Explanation: The one which shows the maximum annual benefit-cost ratio is the most economical lining. It may have a higher cost initially but longer life than another type of lining having a lesser value of the annual benefit-cost ratio.