A Streamline Is---------?
A Streamline Is---------?
Defined For Uniform Flow Only | |
The Line Connecting The Mid-Points Of Flow Cross-Sections | |
Always The Path Of A Particle | |
Drawn Normal To The Velocity Vector At Every Point |
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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Fluid Mechanics mcqs
A Streamline Is A Line In Flow Field ---------?
A Streamline Is A Line In Flow Field ---------?
That Is Traced By All The Fluid Particles Passing Through A Given Point | |
Such That At Every Point On It, The Velocity Is Tangential To It | |
Along Which A Fluid Particle Travels | |
None Of These |
A Stream Tube Is That, Which Has ---------- Cross-Section Entirely Bounded By Stream Lines?
A Stream Tube Is That, Which Has ---------- Cross-Section Entirely Bounded By Stream Lines?
Any Convenient | |
A Large | |
A Circular | |
A Small |
A Stream Line Is-----------?
A Stream Line Is-----------?
Always The Path Of Particle | |
A Line Connecting The Mid Points Of Flow Cross-Section | |
Drawn Normal To The Velocity Vector At Every Point | |
Fixed In Space In Steady Flow |
A Spherical Particle Is Falling Slow In A Viscous Liquid Such That Reynolds Number Is Less Than 1. Which Statement Is Correct For This Situation ?
A Spherical Particle Is Falling Slow In A Viscous Liquid Such That Reynolds Number Is Less Than 1. Which Statement Is Correct For This Situation ?
Drag, Gravitational And Buoyancy Forces Are Important | |
Drag Force And Gravitational Forces Are Important | |
Inertial And Drag Forces Are Important | |
None Of The Above |
A Special Type Of Liquid Transporting Device Is The Diffuser Pump, In Which --------- Are Minimised?
A Special Type Of Liquid Transporting Device Is The Diffuser Pump, In Which --------- Are Minimised?
Shock Losses | |
Bearing Losses | |
Disk Friction | |
Cavitation |
A Rotameter Works On The Principle Of ----------- Pressure Drop?
A Rotameter Works On The Principle Of ----------- Pressure Drop?
Neither Nor B. | |
Both & B. | |
Variable | |
Constant |
A Rotameter Through Which Air At Room Temperature And Atmospheric Pressure Is Flowing Gives A Certain Reading For A Flow Rate Of 100 Cc/Sec. If Helium (Molecular Weight 4) Is Used And Rotameter Shows The Same Reading, The Flow Rate (Cc/Sec) Is----------?
A Rotameter Through Which Air At Room Temperature And Atmospheric Pressure Is Flowing Gives A Certain Reading For A Flow Rate Of 100 Cc/Sec.
325 | |
26 | |
269 | |
42 |
A Relief Valve----------?
A Relief Valve----------?
Provides Back Pressure For A Cylinder | |
None Of These | |
Is A Directional Control Valve | |
Unloads A Pump |
A Rectangular Surface 3′ × 4′, Has The Lower 3 Edge Horizontal And 6′ Below A Free Oil Surface (Sp. Gr. 0.8). The Surface Inclination Is 300 With The Horizontal. The Force On One Side Of The Surface Is (Where, Y = Specific Weight Of Water) ?
A Rectangular Surface 3′ × 4′, Has The Lower 3 Edge Horizontal And 6′ Below A Free Oil Surface (Sp. Gr. 0.8).
58y | |
49.2y | |
39.6y | |
48y |
A Pump Operating Under Specific Conditions Delivers Insufficient Quantity Of Liquid. This May Be Set Right By--------?
A Pump Operating Under Specific Conditions Delivers Insufficient Quantity Of Liquid. This May Be Set Right By--------?
Increasing The Size Of The Inlet Pipe | |
Both And C. | |
Lowering The Pump Position | |
Decreasing The Size Of The Inlet Pipe |
A Pressure Of 10 M Head Of Water Is Equivalent To ---------- Kn/M2?
A Pressure Of 10 M Head Of Water Is Equivalent To ---------- Kn/M2?
147 | |
49 | |
98 | |
196 |
A Pressure Head Of 320 Metres Of Water In Meters Of Ccl4 (Sp.Gr = 1.6) Will Be----------?
A Pressure Head Of 320 Metres Of Water In Meters Of Ccl4 (Sp.Gr = 1.6) Will Be----------?
100 | |
320 | |
160 | |
200 |
A Pitot Tube Indicates 5 Cm Of Water (Manometer) When It Is Being Used For Measuring Velocity Of Air. The Velocity Of Air In M/Sec Is-----------?
A Pitot Tube Indicates 5 Cm Of Water (Manometer) When It Is Being Used For Measuring Velocity Of Air. The Velocity Of Air In M/Sec Is-----------?
5 | |
14.1 | |
56.22 | |
28.2 |
A Pitched-Blade Turbine Draws ---------- A Straight Blade Turbine?
A Pitched-Blade Turbine Draws ---------- A Straight Blade Turbine?
More Power Than | |
Less Power Than | |
Data Insufficient To Predict | |
Same Power As |
A Pipe Of I.D. 4 M Is Bifurcated Into Two Pipes Of I.D. 2 M Each. If The Average Velocity Of Water Flowing Through The Main Pipe Is 5 M/Sec, The Average Velocity Through The Bifurcated Pipes Is----------?
A Pipe Of I.D. 4 M Is Bifurcated Into Two Pipes Of I.D. 2 M Each.
5 M/Sec | |
20 M/Sec | |
5 √2 M/Sec | |
10 M/Sec |
A Pipe Is Defined As ‘Hydraulically Smooth’, If The Friction Factor---------?
A Pipe Is Defined As ‘Hydraulically Smooth’, If The Friction Factor---------?
Is Not A Function Of Reynolds Number | |
Is Zero Irrespective Of The Reynolds Number | |
For A Given Reynolds Number Remains Constant Even On Further Smoothening Of The Pipe | |
None Of These |
A Piezometer Provided In The Pipe Measures----------?
A Piezometer Provided In The Pipe Measures----------?
Dynamic Pressure | |
Friction Factor | |
None Of These | |
Static Pressure |
A Piezometer Opening Measures The --------- Fluid Pressure?
A Piezometer Opening Measures The --------- Fluid Pressure?
Undisturbed | |
Static | |
Total | |
Dynamic |
A Particle A Of Diameter 10 Microns Settles In An Oil Of Specific Gravity 0.9 And Viscosity 10 Poise Under Stoke’S Law. A Particle B With Diameter 20 Microns Settling In The Same Oil Will Have A Settling Velocity ?
A Particle A Of Diameter 10 Microns Settles In An Oil Of Specific Gravity 0.9 And Viscosity 10 Poise Under Stoke’S Law.
Four Times As That Of A | |
Same As That Of A | |
Twice As That Of A | |
One Fourth As That Of A |
A Newtonian Liquid (Ρ = Density, Μ = Viscosity) Is Flowing With Velocity „V‟ In A Tube Of Diameter ‘D’. Let Δp Be The Pressure Drop Across The Length ‘L’. For A Laminar Flow, Δp Is Proportional To---------?
A Newtonian Liquid (Ρ = Density, Μ = Viscosity) Is Flowing With Velocity „V‟ In A Tube Of Diameter ‘D’.
Lμv/D2 | |
Lρv2/D | |
Μv/L | |
Dρv2/L |
A Newtonian Fluid Is That----------?
A Newtonian Fluid Is That----------?
For Which Shear & Deformation Are Related As T = Μ (∂U/∂Y) | |
Which Follows Newton’S Law Of Motion | |
Which Needs A Minimum Shear, Before It Starts Deforming | |
None Of These |
A Mono Pump Is A ---------- Pump ?
A Mono Pump Is A ---------- Pump ?
Piston | |
A Group Of Vacuum | |
Centrifugal | |
Positive Acting Rotary |
A Mixed Flow Centrifugal Pump-----------?
A Mixed Flow Centrifugal Pump-----------?
Employs Such An Impeller, Through Which The Flow Is A Combination Of Radial & Axial Flow | |
Mixes The Two Fluids Before Pumping Them | |
Employs Impellers In Both The Radial & Axial Directions | |
Pumps The Two Fluids Separately And Then Mixes Them |
A Lubricant 100 Times More Viscous Than Water Would Have A Viscosity (In Pa.S) ?
A Lubricant 100 Times More Viscous Than Water Would Have A Viscosity (In Pa.S) ?
10 | |
1 | |
0.1 | |
0.01 |