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Fluid mechanics Reference of pressure measurement  WATCH VIDEO My book:- https://imojo.in/unitech108 Absolute pressure/ actual pressure  The pressure of the system measured from zero level/ perfect vacuum/ absolute zero pressure is called absolute pressure  absolute pressure measured by the "Android meter" 2. Gauge pressure  positive guage pressure=The net pressure of system above the atmospheric pressure is cal toled positive gauge pressure  Negative guage pressure /suction pressure/ vacuum pressure= the net pressure of system below the atmospheric pressure is called suction pressure  Note  guage pressure is measured by the manometer device  negative reading not possible in absolute system  atmospheric pressure in space reading will be zero  reaction between absolute pressure atmospheric pressure and gauge pressure  P(absolute)=P(atmosphere)+P(gauge) Q.determine the cause pressure for 14.3 of H2O ...

Fluid Mechanics  Numerical problem of pressure watch video My ebook:- https://imojo.in/unitech108 Q.if the density is changed by the function ¶=¶↓0(1+h) where,¶↓0=constant and h= height from top level of the liquid find the pressure intensity at point 2. Q. if the kerosene oil measure certain pressure intensity in term 5 metre height then the find the liquid height corresponding to the same pressure is unit of specific gravity of kerosene oil was 0.6 and liquid specific gravity 0.8  Q.what will what will the water and HG height corresponding to 1 ATM pressure  Q.determine the height of a specific gravity 0.8 corresponding to 1 ATM pressure

Reasoning  alphabet  click here A1-Z26= Azad B2-Y25= boy C3-X24= crax D4-W23= dew E5-V22= even F6-U21= fuel G7-T20= GT Road H8-S19= High School I9-R18= Indian Railway J10-Q17= Jungle queen K11-P16= Kanpur L12-O15= love M13-N14= man A1 that means A place in 1st number in alphabet english version trick  there was a boy its name Azad he eat crax taken in dew with even car take up fuel go away in GT Road in High School after he going to Indian Railway rail moves in jungle queen going to Kanpur he falling in love he goes to man  hindi version trick Azad Naam Ka Ladka tha usne crax khaya Dew Lagaya even gadi per fuel Bharya aur GT Road ke Raste High School Gaya vahan se Indian Railway Gaya aur Jungle queen Ke Raste vah Kanpur pahuncha vahan usko Love Hua  aur vah aadami ban gaya questions with solution A e i o u=1 59 15 21 =12345 e j o t y =5 10 15 20 25 c f i l o r u x =3 6 9 12 15 18 21 24 p r...

Fluid mechanics  numerical problem of pressure  video download here My ebook:-https://imojo.in/unitech108 gate-2014 Q.find the the order of pressure intensity and weight of the vessel. ssc je 2017 Q.if the pressure is 8.93 Newton per centimetre square then find the corresponding liquid height when the liquid is 1.water 2.hg 3.oil of G=0.9 NOTE For same pressure intensity two liquid having specific gravity G1 and G2 and cross ponding height H1 and H2 then G1H1=G2H2 Q.the pressure in metre of oil(specific gravity 0.85) equivalent to 42.5 metre of water. Q.determine the pressure intensity at the bottom of the tank.

Fluid mechanics  Pascal experiment/hydrostatic law video                        download here My ebook:- https://imojo.in/unitech108 according to pascal experiment pressure intensity for given liquid only the function of height /depth from the top level of liquid in hydrostatic condition.  according to pascal experiment pressure intensity at given height equal in same amount and all direction for given . according to pascal experiment pressure gradient along the depth/height equal to the Unit Weight of liquid . three statement is known as hydrostatic law In hydrostatic condition shear stress will be zero and normal stress acted will not be zero In hydrostatic condition and for given liquid  formula dp/dh=¶g=¥ where,¶=density ¥=unit weight/specific weight

  fluid mechanics unit 2 topic=pressure VIDEO link https://youtu.be/Pz8oPCBg_EM My ebook:- https://imojo.in/unitech108 Pressure In the fluid system pressure intensity due to my molecular present in the system Pressure intensity is defined as the P is equal to F divide by A P=F/A,, Where ,F= normal force to the area / total force  A=analysed area  P=pressure intensity Unit of pressure  SI unit =Newton per metre square  CGS unit =dyne per centimetre square  1 ATM=101325 Newton per metre square  1 bar= 10^5 Newton per metre square 1 PSI= 694 2.66 Newton per metre square  1 torr=1 mm of HG   NOTE  relation between units  1 ATM=101325 Newton per metre square=1.01325 bar= 14.6 psi=760 mm of HG or 760 torr order of units ATM >bar> PSI >torr>Newton per metre square Pressure intensity at one point dP=¶gdH  2017-ssc je (in hydrostatic fluid =relative motion not present b...

Capillarity VIDEO My ebook:- https://imojo.in/unitech108 Numerical problem of capillary rise and depression Q. The capillary rise in glass tube is not to exceed 0.2 metre of water then determine the maximum size of diameter, ANS=14322.6m Q. If the capillary rise of water in 1 mm diameter tube is 3 mm the height of capillary rise of water in 0.2 mm diameter tube in centimetre will be. ANS=1.5 cm Q. If the specific weight of water(γ) and diameter of tube(t) and radius of tube (R)then determine capillary Rise is.

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FLUID MECHANICS Capillarity MY BOOK:- https://imojo.in/unitech108 It's the phenomenon of rise and fall of the liquid surface in small tube (diameter is less than 10mm) relative to adjacent level of liquid when tube is immersed vertically downward The rise of liquid is known capillary rise and the fall of liquid is known as capillary depression   $ads={1} Phenomenon Minicus=down Convexity=down Concavity=up Adhesion>cohession Wetting liquid θ<90° Minicus=up Convexity=up Concavity=down Adhesion<cohession Non Wetting liquid θ>90° $ads={2} Note For water (pure) and clean glass combination θ≈0° For clean glass and AgNO ₃ solution θ≈90° For clean glass and Mercury (hg) θ≈128°, θ≈125° to 140° capillary rise /depression is given by H=4Tcosθ/¶gd where,T=surface tension θ=contact angle d=diameter of tube ¶=density of liquid H=capillary rise/depression left sidebar contact form x

FLUID MECHANICS Surface tension numerical My book:- https://imojo.in/unitech108 Q.A spherical bottle drop of 1mm in split in air in to 64 small drop of equal size. The surface tension coefficient of water in air 0.07N-m then determine diameter of smaller drop(by volume conversation) energy difference between bigger drop and total small drop Ans=

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FLUID MECHANIC PROPERTY SURFACE TENSION My ebook:- https://imojo.in/unitech108 surface tension It's property of fluid which resist tensile stress surface tension of property having elastic in nature surface tension property having minimize surface area cause of surface tension is cohesion generally surface tension of water is 0.073 N/m due to temperature increase surface tension decrease due to salt addition surface tension of water increase due to detergent addition surface tension of water decrease surface tension property is defined as T=F/L , where F=intermolecular attraction force L=desired length T=surface tension Unit of surface tension S.I=N/m C.S.S=dyne/cm Dimension of surface tension S.I=[ML^0 T^-2] Surface tension for dominant generally root analysis Weber number is related to surface tension force We={√F(inertia)}/√F(surface tension) Weber number is the square root of ratio of inertia force and surface tension force