Question

The manomeric fluid density should be ______than that of flowing fluid.

(a) greater

(b) smaller

(c) equal

(d) very small

I got this question by my school principal while I was bunking the class.

Origin of the question is Pressure Measurement in a Fluid topic in portion Fluid Flow Theory & Applications of Food Processing Unit Operations

Answer 1

The correct choice is (a) greater

To explain I would say: The manometer is also called as wet meter. The density of the manomeric fluid should be greater than that of flowing fluid. Mercury can be used because it has a high density and therefore  manometer size is minimized.