The Lift Of A Balloon Is---------?
The Lift Of A Balloon Is---------?
None Of These | |
Increased, As It Rises To A Higher Altitude | |
Due To The Weight Of The Atmospheric Air, That It Displaces | |
Not Dependent On The Temperature Of The Atmosphere |
پاک اسٹڈی لائبریری اپنی خدمات کو بہتر کرنے کے لئے نئے سوفٹ وئیر انسٹال کررہی ہے ۔ اس لئے آئندہ کچھ دن آپ کو کچھ صفحات تک رسائی میں مشکلات کا سامنا ہوسکتا ہے ۔ جس کے لئے ہم معذرت خواہ ہیں۔
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The Lift Of A Balloon Is---------?
None Of These | |
Increased, As It Rises To A Higher Altitude | |
Due To The Weight Of The Atmospheric Air, That It Displaces | |
Not Dependent On The Temperature Of The Atmosphere |
The Length Of The Tube Necessary For The Boundary Layer To Reach The Centre Of The Tube And For Fully Developed Flow To Be Established Is Called The ---
Prandtl Mixing | |
None Of These | |
Transition | |
Equivalent |
The Kinetic Energy Correction Factor For Velocity Distribution Of Laminar Flow Is---------?
1 | |
2 | |
0.5 | |
1.66 |
The Inherent Characteristic Of An Equal Percentage Valve Relating Flow Rate ‘Q’ With Valve Stem Movement ‘X’ Are Described By The Equation---------?
Dq/Dx = K | |
.Q | |
Q2 | |
/Q |
The Hydrodynamic And Thermal Boundary Layers Will Merge, When --------?
Prandtl Number Is One | |
Nusselt Number Tends To Infinity | |
Schmidt Number Tends To Infinity | |
Archimedes Number Is Greater Than 10000 |
The Hydraulic Radius For Flow In A Rectangular Duct Of Cross-Sectional Dimension H, W Is-----------?
2hw/(H + W) | |
Hw/4 (H + W)2 | |
Hw/2 (H + W)2 | |
√(Hw/Π) |
The Hydraulic Diameter Of An Annulus Of Inner And Outer Radii Ri And Ro Respectively Is-----------?
√(Ro-Ri) | |
Ro + Ri | |
2(Ro-Ri) | |
4(Ro-Ri) |
The Head Loss In Turbulent Flow In Pipe Is Proportional To(Where, V = Velocity Of Fluid Through The Pipe) ?
V | |
1/V | |
1/ | |
V2 |
The Head Loss In Turbulent Flow In A Pipe Varies---------?
Inversely As The Square Of The Diameter | |
Approximately As The Square Of The Velocity | |
Inversely As The Square Of The Velocity | |
Directly As The Velocity |
The Head Loss In Turbulent Flow In A Pipe Varies--------?
As Velocity | |
Inversely As The Velocity | |
As (Velocity)2 | |
Inversely As The Square Of Diameter |
The Head Loss Due To Sudden Expansion Is----------?
(V1 – V2)/2gc | |
(V12 – V22)/2gc | |
(V12 – V22)/Gc | |
(V1 – V2)2/2gc |
The Head Loss Due To Sudden Contraction Is Proportional To-----------?
Velocity | |
None Of These | |
Velocity Head | |
Turbulence |
The Head Developed By A Centrifugal Pump Is Largely Determined By The--------?
Power Of The Pump | |
Nature Of The Liquid Being Pumped | |
Angle Of The Vanes And The Speed Of The Tip Of The Impeller | |
Vapour Pressure Of The Liquid |
The General Relationship Between Speed N, Head H, Power P And Discharge Q For A Centrifugal Pump Is---------?
Q∝N2 : H∝N3 : P∝N | |
Q∝N : H∝N3 : P∝N2 | |
Q∝N3 : H∝N : P∝N2 | |
Q∝N : H∝N2 : P∝N3 |
The Frictional Resistance In Laminar Flow Does Not Depend On The---------?
Area Of Surface In Contact | |
Flow Velocity | |
Pressure Of Flow | |
Fluid Temperature |
The Friction Factor Is-----------?
Always Inversely Proportional To The Reynolds Number | |
Not Dimensionless | |
Not Dependent On The Roughness Of The Pipe | |
None Of These |
The Friction Factor For Turbulent Flow In A Hydraulically Smooth Pipe----------?
Does Not Depend On Reynolds Number | |
Depends Only On Reynolds Number | |
None Of These | |
Depends On The Roughness |
The Fluid Velocity Varies As The Square Root Of The Cylindrical Pipe Diameter In Case Of Steady State Laminar Flow At Constant Pressure Drop Of --------
Dilatent | |
Bingham Plastic | |
Newtonian | |
Pseudo-Plastic |
The Fluid Velocity Varies As The Square Of The Cylindrical Pipe Diameter, In Case Of Steady State Laminar Flow At Constant Pressure Drop, For ----------
Non-Newtonian | |
Pseudo-Plastic | |
Dilatant | |
Newtonian |
The Fluid Velocity Varies As The Cube Of The Cylindrical Pipe Diameter In Case Of Steady State Laminar Flow At Constant Pressure Drop For -------- Fluid
Dilatent | |
Newtonian | |
Bingham Plastic | |
Pseudo-Plastic |
The Fluid Property, Due To Which, Mercury Does Not Wet The Glass Is----------?
Viscosity | |
Adhesion | |
Surface Tension | |
Cohesion |
The Fluid Property Which Matters For Falling Rain Drops To Acquire Spherical Shape Is Its----------?
Surface Tension | |
Viscosity | |
Height Of Descend | |
Pressure |
The Fluid Jet Discharging From A 2″ Diameter Orifice Has A Diameter Of 1.75″ At Its Venacontracta. The Co-Efficient Of Contraction Is-----------?
0.87 | |
1.3 | |
None Of These | |
0.766 |
The Fluid In Which The Shearing Stress Within It Is Proportional To The Velocity Gradient Across The Sheared Section, Is Called A --------- Fluid?
Perfect | |
Newtonian | |
Bingham | |
None Of These |
The Flow Of Gas Along A Pipe In The Direction Of Decreasing Pressure Causes Decrease In Its----------?
None Of These | |
Specific Volume | |
Viscosity | |
Velocity |