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

Determine moment of this normal force - rectangular beam, Determine moment ...

Determine moment of this normal force - rectangular beam: A rectangular beam contains a width of 100 mm and a depth of 200 mm. This is utilized as a simply supported beam & th

Entropy, Change in entropy for reversible

Change in entropy for reversible

Harmonic motion equilibrium, (a) Split up the harmonic x = 8 sin(ωt + 45°),...

(a) Split up the harmonic x = 8 sin(ωt + 45°), into two harmonic motions, one of which has amplitude of 10 and phase difference zero. (a) A body is subjected to two harmonic mot

Resultant of non coplanar concurrent force system, Resultant of Non coplana...

Resultant of Non coplanar concurrent force system: How do you find resultant of Non coplanar concurrent force system? Sol.: The resultant of non concurrent force system

Eccentricity-unbalance-balancing, Eccentricity : This is distance between...

Eccentricity : This is distance between the axis of rotation and CG of mass. Unbalance : This is the product of mass and eccentricity. Balancing : This is

Section modulus and value of bending moment, Q. Wha t do you mean by secti...

Q. Wha t do you mean by section modulus ( Z )? What is value of bending moment in the terms of section modulus? Sol.: Section modulus is ratio of M.I. about neutral ax

Can you explain limitations of eulers theory, (a) Can you explain limitatio...

(a) Can you explain limitations of Euler's theory (b) Derive a mathematical expression to determine the crippling load of a column with on end fixed and other end hinged (c)

Find the maximum torque - i-section, Find the maximum torque - I-section: ...

Find the maximum torque - I-section: An I-section 150 × 80 mm has flanges 6 mm thick and web 4 mm thick. Discover the maximum torque that may be safely applied if the shear st

Rough-cut capacity planning, A small producer of specialist vehicles is bui...

A small producer of specialist vehicles is building a new workshop to meet expected demand for its products over a period of 5 years.  The workshop will contain three workcentres,

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