Fluid Statics MCQ with answer and solution

Concept

Pressure measurement range of manometer

Formula

NONE

Step-by-step solution

1. A manometer is a pressure-measuring instrument that uses columns of liquid to measure fluid pressure. 2. Unlike simple piezometers, manometers can employ high-density fluids like mercury to measure high or differential pressures. 3. Therefore, it is suitable for measuring high pressure as well as negative or differential pressures. Answer: C

Explanation

Manometers are fluid head instruments capable of measuring high pressures and pressure differences in fluid systems. Unlike simple piezometer tubes, they utilize dense manometric liquids like mercury to balance larger pressures without requiring excessive tube heights. Therefore, they are designed to measure high pressure values.

Why the other options are wrong

A) Low pressure is typically measured using piezometers or simple inclined gauges. B) Moderate pressure is usually measured using piezometer tubes. D) Atmospheric pressure is measured using a barometer.

Shortcut

Manometer = Moderate fluid pressure measurement.

Common mistake

Confusing manometers with piezometers, which can only measure moderate fluid pressures.