A Streamline Is---------?
A Streamline Is---------?
Always The Path Of A Particle | |
The Line Connecting The Mid-Points Of Flow Cross-Sections | |
Defined For Uniform Flow Only | |
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۔
Pak Study Library is installing new software to improve its services. herefore, in the next few days, you may face difficulties in accessing some pages. sorry for the inconvenience.
Fluid Mechanics mcqs
A Streamline Is A Line In Flow Field ---------?
A Streamline Is A Line In Flow Field ---------?
None Of These | |
Along Which A Fluid Particle Travels | |
Such That At Every Point On It, The Velocity Is Tangential To It | |
That Is Traced By All The Fluid Particles Passing Through A Given Point |
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?
A Large | |
A Circular | |
Any Convenient | |
A Small |
A Stream Line Is-----------?
A Stream Line Is-----------?
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 | |
Always The Path Of Particle |
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 ?
None Of The Above | |
Drag Force And Gravitational Forces Are Important | |
Drag, Gravitational And Buoyancy Forces Are Important | |
Inertial And Drag Forces Are Important |
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 | |
Cavitation | |
Disk Friction | |
Bearing Losses |
A Rotameter Works On The Principle Of ----------- Pressure Drop?
A Rotameter Works On The Principle Of ----------- Pressure Drop?
Constant | |
Neither Nor B. | |
Both & B. | |
Variable |
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.
269 | |
26 | |
325 | |
42 |
A Relief Valve----------?
A Relief Valve----------?
None Of These | |
Unloads A Pump | |
Provides Back Pressure For A Cylinder | |
Is A Directional Control Valve |
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 | |
48y | |
49.2y | |
39.6y |
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 | |
Decreasing The Size Of The Inlet Pipe | |
Both And C. | |
Lowering The Pump Position |
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?
98 | |
196 | |
49 | |
147 |
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----------?
160 | |
100 | |
320 | |
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-----------?
28.2 | |
56.22 | |
14.1 | |
5 |
A Pitched-Blade Turbine Draws ---------- A Straight Blade Turbine?
A Pitched-Blade Turbine Draws ---------- A Straight Blade Turbine?
Same Power As | |
Less Power Than | |
More Power Than | |
Data Insufficient To Predict |
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 | |
10 M/Sec | |
5 √2 M/Sec | |
20 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 | |
None Of These | |
For A Given Reynolds Number Remains Constant Even On Further Smoothening Of The Pipe |
A Piezometer Provided In The Pipe Measures----------?
A Piezometer Provided In The Pipe Measures----------?
Static Pressure | |
Dynamic Pressure | |
None Of These | |
Friction Factor |
A Piezometer Opening Measures The --------- Fluid Pressure?
A Piezometer Opening Measures The --------- Fluid Pressure?
Dynamic | |
Static | |
Total | |
Undisturbed |
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.
One Fourth As That Of A | |
Twice As That Of A | |
Same As That Of A | |
Four Times 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 | |
Dρv2/L | |
Μv/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 ?
Positive Acting Rotary | |
Centrifugal | |
A Group Of Vacuum | |
Piston |
A Mixed Flow Centrifugal Pump-----------?
A Mixed Flow Centrifugal Pump-----------?
Employs Impellers In Both The Radial & Axial Directions | |
Employs Such An Impeller, Through Which The Flow Is A Combination Of Radial & Axial Flow | |
Mixes The Two Fluids Before Pumping Them | |
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 | |
0.01 | |
0.1 | |
1 |