Conversion of pressure reading into kpa, Mechanical Engineering

Assignment Help:

Convert following reading of pressure to kPa, supposing that the barometer reads 760mm Hg.

(1) 90cm Hg gauge
(2) 40cm Hg vacuum
(3) 1.2m H
2O gauge

Sol: Given that h = 760mm of Hg for Patm

Patm =   gh = 13.6 × 103  × 9.81 × 760/1000 = 101396.16

N/m2 = 101396.16Pa = 101.39KPa                                                                          ...(i)

(a)  90cm Hg gauge

Pgauge = gh = 13.6 × 103  × 9.81 × 90/100 = 120.07KPa                                             ...(ii)

Pabs  = Patm  + Pgauge = 101.39 + 120.07

Pabs  = 221.46KPa                        .......ANS

(b)  40cm Hg vacuum

Pvacc =  gh = 13.6 × 103  × 9.81 × 40/100 = 53.366KPa                                           ...(iii)

Pabs  = Patm  - Pvacc

= 101.39 - 53.366

Pabs  = 48.02KPa                           .......ANS

(c)1.2m Water gauge

Pgauge  =   gh = 1000 × 9.81 × 1.2 = 11.772KPa                                                              ...(iv)

Pabs  = Patm  + Pgauge

= 101.39 + 11.772

Pabs  = 113.162KPa          .......ANS


Related Discussions:- Conversion of pressure reading into kpa

Hierarchical system structure, Ask question #Minimum 100 words awrite short...

Ask question #Minimum 100 words awrite short note on the the hierarchical system structure involving various level

Determine the force and stress, The space truss is supported by a ball-and-...

The space truss is supported by a ball-and-socket joint at D and short links at C and E. Determine the force and stress in each member and state if the members are buckle or

Shear force and bending moment diagrams and contra flexure, Draw the shear ...

Draw the shear force and bending moment diagrams for the beams shown in Figures 4 and 5. Also find the maximum shear force, bending moment and the points of contra-flexure

Rigid bodies, A sign of uniform density weighs 270 lb and is supported by a...

A sign of uniform density weighs 270 lb and is supported by a ball-andsocket joint at A and by two cables. Determine the tension in each cable and the reaction at A.

Illustrate different methods of merit rating, a) What are essential needs o...

a) What are essential needs of a job evaluation plan. Illustrate the point plan method b) Describe factor comparison method of job evaluation. a) What are basic objectives an

Stresses., temparature stresses in composite bars

temparature stresses in composite bars

Determine the angular-velocity of uniform bar, Determine the angular-veloci...

Determine the angular-velocity of uniform bar: A uniform bar of length l and mass M is hinged at its end B and is released from its horizontal position BA. Determine its angul

Illustrate process of radiographic examination, Q. Illustrate process of Ra...

Q. Illustrate process of Radiographic Examination? Radiographic examination of welded joints shall be performed when required by the Code or additionally when specified in this

Control System, I have a project due in 20 hours and I need help please.

I have a project due in 20 hours and I need help please.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd