Fluid Mechanics mcqs

9th-class-result-2022

Which Of The Following Relationship Is Valid For The Equilibrium Position Of The Float In A Rotameter? (Where, Df= Drag Force On The Float Bf = Buoyant Force On The Float Wf = Weight Of The Float)?

Which Of The Following Relationship Is Valid For The Equilibrium Position Of The Float In A Rotameter?

Incorrect

Df = Bf + Wf

Correct

Df + Bf = Wf

Incorrect

Df + Bf + Wf =0

Incorrect

None Of These

Which Of The Following Options Will Facilitate The Achievement Of A Very High Head (Say 30 Metres) In Case Of A Centrifugal Pump ?

Which Of The Following Options Will Facilitate The Achievement Of A Very High Head (Say 30 Metres) In Case Of A Centrifugal Pump ?

Incorrect

Increasing The Impeller Speed And The Volute Area

Incorrect

Increasing The Number Of Vanes In The Impeller

Correct

Mounting Of Two Or More Impellers In Series On A Single Shaft

Incorrect

Either Of A., Or C.

Working Principle Of Manometer Comprises Of Balancing A Coloumn Of Liquid Against The Pressure To Be Measured. Inclined Tube Manometer Is Especially Used For The Measurement Of ---------- Pressure?

Working Principle Of Manometer Comprises Of Balancing A Coloumn Of Liquid Against The Pressure To Be Measured.

Incorrect

Absolute

Correct

Small Differential

Incorrect

Atmospheric

Incorrect

Gage

With Increase In The Ratio Of Orifice Diameter To Pipe Diameter, The Fraction Of The Orifice Pressure Differential That Is Permanently Lost--------?

With Increase In The Ratio Of Orifice Diameter To Pipe Diameter, The Fraction Of The Orifice Pressure Differential That Is Permanently Lost--------?

Incorrect

Increases Exponentially

Incorrect

Increases

Incorrect

Remains Unchanged

Correct

Decreases