Chapter 3, Problem 3.56P

Interpretation Introduction

(a)

Interpretation:

The observed manometer reading is to be calculated, if the manometer fluid is (i) mercury, (ii) water and the preferred manometer fluid is to be identified with an explanation.

Concept introduction:

For manometer fluid as mercury the net equation for pressure is written as,

${\text{ρ}}_{\text{t}}g\left(500-h+R_{\text{m}}\right)={\text{ρ}}_{\text{m}}g{R}_{\text{m}}$

For water the above equation is written as,

${\text{ρ}}_{\text{t}}g\left(500-h+R_{\text{w}}\right)={\text{ρ}}_{\text{w}}g{R}_{\text{w}}$

Interpretation Introduction

(b)

Interpretation:

An explanation for the working of system if toluene is used as manometer fluid is to be stated and several advantages of mercury fluid over toluene is to be stated

Concept introduction:

Manometer is a device used to measure pressure of gas or vapor at low levels. It is helpful in differentiating static and dynamic pressures. Its shape may be U-tube, inverted or a single tube.

Interpretation Introduction

(c)

Interpretation:

The purpose of nitrogen blanket to be stated.

Concept introduction:

Manometer is a device used to measure pressure of gas or vapor at low levels. It is helpful in differentiating static and dynamic pressures. Its shape may be U-tube, inverted or a single tube.