With Increase In Molecular Weight Of The Gas, The Head Developed By A Centrifugal Compressor Will--------?
 | Remain Same |
| Increase |
| Unpredictable |
 | Decrease |
With Diminishing Cross-Sectional Area In Case Of Subsonic Flow In A Converging Nozzle, The--------?
| Pressure Decreases |
| Both & B. |
| Both & B. |
| Velocity Increases |
With Decrease In Particle Size To Be Fluidised By A Particular Fluid, The Operating Range Of Fluidisation Velocity-----------?
| Unpredictable From The Data |
| Widens |
| Squeezes |
| Does Not Change |
With A Constant Diameter Impeller Of A Centrifugal Pump ---------?
| Its Capacity Varies Directly As The Square Of Speed |
| Head Varies As The Speed |
| Head Varies As The Square Of Speed |
| Horsepower Input Varies As The Square Of Speed |
While Starting An Axial Flow Pump, Its Delivery Valve Should Be Kept -----------?
| None Of These |
| Either Open Or Closed |
| Closed |
| Open |
While Starting A Centrifugal Pump, Its Delivery Valve Should Be Kept-----------?
| Either Opened Or Closed; It Does Not Make Any Difference |
| Opened |
| Either Opened Or Closed; Depending On The Fluid Viscosity |
| Closed |
Which Of The Following Valves Will Incur Maximum Pressure Drop For The Same Discharge Of Water ?
| Butterfly Valve |
| Needle Valve |
| Globe Valve |
| Gate Valve |
Which Of The Following Two Quantities When Same, Makes One Pipe System Equivalent To Another Pipe System ?
| Friction Factor & Diameter |
| Length & Discharge |
| Head & Discharge |
| Length & Diameter |
Which Of The Following Relationship Is Valid For The Equilibrium Position Of The Float In A Rotameter?
| Df + Bf = Wf |
| Df + Bf + Wf =0 |
| Df = Bf + Wf |
| None Of These |
Which Of The Following Quantities Are Computed By Using The Hydraulic Radius For Noncircular Ducts ?
| Head Loss And Velocity |
| Reynold Number, Relative Roughness And Head Loss |
| Velocity And Relative Roughness |
| Reynolds Number And Friction Factor |
Which Of The Following Properties Of A Fluid Is Responsible For Offering Resistance To Shear ?
| Specific Gravity |
| Viscosity |
| Surface Tension |
| All |
Which Of The Following Produces Maximum Pressure Difference For Transportation Of Gases ?
| Fans |
| Blowers |
| Compressors |
| Vacuum Pumps |
Which Of The Following Pipe Bends Will Incur The Largest Head Loss ?
| 30° Bend |
| U-Bend |
| 45° Bend |
| 90° Bend |
Which Of The Following Options Will Facilitate The Achievement Of A Very High Head (Say 30 Metres) In Case Of A Centrifugal Pump ?
| Either Of A., Or C. |
| Mounting Of Two Or More Impellers In Series On A Single Shaft |
| Increasing The Impeller Speed And The Volute Area |
| Increasing The Number Of Vanes In The Impeller |
Working Principle Of Manometer Comprises Of Balancing A Coloumn Of Liquid Against The Pressure To Be Measured.
| Absolute |
| Small Differential |
| Gage |
| Atmospheric |
Working Of A ----------- Pump Characterises Mixed Flow?
| Diaphragm |
| None Of These |
| Piston |
| Turbine |
With The Increase In Depth, The Hydrostatic Pressure In An Un-Accelerated Incompressible Fluid (In A Constant Gravitational Field) ?
| Remain Constant |
| Increases Exponentially |
| Decreases |
| Increases Linearly |
With Increasing Flow Rate, The Hydraulic Efficiency Of A Centrifugal Pump----------?
| Decreases And Then Increases |
| Monotonically Decreases |
| Remains Constant |
| Increases And Then Decreases |
With Increase In The Temperature, Viscosity Of A Liquid--------?
| Decreases |
| Remain Constant |
| Increases |
| May Increase Or Decrease; Depends On The Liquid |
With Increase In The Shear Rate, The Apparent Viscosity Of Pseudo-Plastic Fluids----------?
| May Increase Or Decrease; Depends On The Magnitude Of Shear Rate |
| Remain Same |
| Increases |
| Decreases |
With Increase In The Ratio Of Orifice Diameter To Pipe Diameter, The Fraction Of The Orifice Pressure Differential That Is Permanently Lost--------?
| Decreases |
| Remains Unchanged |
| Increases |
| Increases Exponentially |
With Increase In The Ratio Of Orifice Diameter To Pipe Diameter In Case Of An Orificemeter, The Overall Pressure Loss-----------?
| Decreases |
| Increases Linearly |
| Remain Constant |
| Increases |
With Increase In Temperature, The Vapor Pressure Of Liquids----------?
| Decreases |
| Increases |
| Remain Constant |
| Linearly |
With Increase In Pump Speed, Its Npsh Requirement---------?
| Can Either Increase Or Decrease; Depends On Other Factors |
| Decreases |
| Remains Unaltered |
| Increases |
Which Of The Following May Be Termed As A Variable Orifice Flow-Meter ?
| V-Notch |
| All A., And C. |
| Rotameter |
| Pitot Tube |