Description : __________ is used for measuring the static pressure exerted on the wall by a fluid flowing parallel to the wall in a pipeline. (A) Venturimeter (B) Pressure gauge (C) Pitot tube (D) Orificemeter
Last Answer : (C) Pitot tube
Description : For a given fluid flow rate, which of the following incurs maximum head loss? (A) Orificemeter (B) Venturimeter (C) Flow nozzle (D) All of them incur the same head loss
Last Answer : (A) Orificemeter
Description : Select the wrong statement pertaining to flow of an incompressible fluid through a Venturimeter. (A) For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal ... than an orificemeter (D) Venturimeter incurs less power loss compared to an equivalent orificemeter
Last Answer : (C) Venturimeter occupies less space than an orificemeter
Description : For the same flow rate of a fluid, the pressure drop is the least for (A) Venturimeter (B) Orificemeter (C) Flow-nozzle (D) Δp is same for all
Last Answer : (A) Venturimeter
Description : Power loss in an orificemeter is __________ that in a Venturimeter. (A) Less than (B) Same as (C) More than (D) Data insufficient, cannot be predicted
Last Answer : (C) More than
Description : itot tube measures the __________ of a fluid. (A) Pressure (B) Average velocity (C) Average flow rate (D) Point velocity
Last Answer : (D) Point velocity
Description : The pressure head of a flow meter remains constant for (A) Venturimeter (B) Orificemeter (C) Rotameter (D) Pitot tube
Last Answer : (C) Rotameter
Description : Out of the following flow measuring devices, which one incurs themaximum installation cost as well as pressure loss? (A) Flow nozzle (B) Venturimeter (C) Rotameter (D) Orificemeter
Last Answer : (B) Venturimeter
Description : A Venturimeter measures the (A) Velocity head (B) Pressure (C) Point velocity (D) None of these
Last Answer : (D) None of these
Description : Flow measurement in an open channel is done by a/an (A) Venturimeter (B) Orificemeter (C) Weir (D) Rotameter
Last Answer : (C) Weir
Description : Water flow rate in a pipe of 3.5 metres diameter can be most economically and conveniently measured by a/an (A) Pitot tube (B) Venturimeter (C) Orificemeter (D) Rotameter
Last Answer : (A) Pitot tube
Description : Bernoulli’s equation does not apply to the functioning of a/an (A) Venturimeter (B) Orificemeter (C) pitot tube (D) None of these
Description : Which of the following can be used for the direct measurement of volumetric flow rate of slurry? (A) Venturimeter (B) Orificemeter (C) Rotameter (D) Pitot tube
Description : Which of the following flow measuring devices is an area meter? (A) Venturimeter (B) Orificemeter (C) Anemometer (D) Rotameter
Last Answer : (D) Rotameter
Description : Which is the most efficient and best for measuring very small flow rate of gases? (A) Venturimeter (B) Orificemeter (C) Rotameter (D) Flow nozzle
Description : Vena-contracta formed during flow of a liquid through an orificemeter has (A) Minimum liquid cross-section (B) More diameter compared to orifice diameter (C) Minimum velocity of fluid stream (D) None of these
Last Answer : (A) Minimum liquid cross-section
Description : In case of Venturimeter, friction losses are about __________ percent of maximum velocity head. (A) 2 (B) 8 (C) 12 (D) 20
Last Answer : (A) 2
Description : Which of the following statement is wrong? (A) A flow whose streamline is represented by a curve is called two dimensional flow. (B) The total energy of a liquid particle is the sum of potential energy, ... (D) A pitot tube is used to measure the velocity of flow at the required point in a pipe.
Last Answer : Answer: Option C
Description : The Prandtl Pitot tube measures the (A) Velocity at a point in the flow (B) Pressure at a point (C) Average flow velocity (D) Pressure difference in pipe flow
Last Answer : (A) Velocity at a point in the flow
Description : Location of vena-contracta in an orificemeter does not depend upon the (A) Type of orifice (B) Density, viscosity & compressibility of the fluid (C) Ratio of pipe diameter to orifice diameter (D) Pipe roughness
Last Answer : (A) Type of orifice
Description : Vena-contracta pressure tapping is at a distance __________ from the position of an orificemeter fitted in a pipe of internal diameter 'd' (A) d (B) 0.5 d (C) 2d (D) 4d
Last Answer : (B) 0.5 d
Description : Which of the following is used for very accurate measurement of flow of gas at low velocity? (A) Pitot tube (B) Rotameter (C) Segmental orificemeter (D) Hot wire anemometer
Last Answer : (D) Hot wire anemometer
Description : 17. In a Venturimeter, the velocity of liquid at throat is __________ than at inlet. A) Higher B) Lowe
Last Answer : A
Description : In fluid flow, the stagnation point is defined as a point, where the __________ is zero. (A) Flow velocity (B) Pressure (C) Total energy (D) All (A), (B) and (C)
Last Answer : (A) Flow velocity
Description : Venturimeter is used to (A) Measure the velocity of a flowing liquid (B) Measure the pressure of a flowing liquid (C) Measure the discharge of liquid flowing in a pipe (D) Measure the pressure difference of liquid flowing between two points in a pipe line
Description : A piezometer opening measures the __________ fluid pressure. (A) Static (B) Undisturbed (C) Total (D) Dynamic
Last Answer : (B) Undisturbed
Description : Permanent pressure loss in a well designed Venturimeter is about __________ percent of the venturi differential. (A) 1 (B) 10 (C) 30 (D) 50
Last Answer : (A) 1
Description : Permanent loss in a Venturimeter is about __________ percent of the pressure drop in the upstream cone. (A) 1 (B) 10 (C) 40 (D) 70
Last Answer : (B) 10
Description : In a/an __________, the flow rate of fluids is obtained by measuring the difference between the impact and the static pressure. (A) Rotameter (B) Pitot tube (C) Venturimeter (D) Flow nozzle
Last Answer : (B) Pitot tube
Description : The ratio of average fluid velocity to the maximum velocity in case of laminar flow of a Newtonian fluid in a circular pipe is (A) 0.5 (B) 1 (C) 2 (D) 0.66
Last Answer : (A) 0.5
Description : Pick out the wrong statement pertaining to fluid flow. (A) The ratio of average velocity to the maximum velocity for turbulent flow of Newtonian fluid in circular pipes is 0.5 (B) The Newtonian ... at the centre of the pipe (C) Navier-Stokes equation is applicable to the analysis of viscous flows
Last Answer : (A) The ratio of average velocity to the maximum velocity for turbulent flow of Newtonian fluid in circular pipes is 0.5
Description : In case of turbulent flow of a Newtonian fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity) (A) Vavg (B) 1.2 Vavg (C) 1.5 Vavg (D) 1.8 Vavg
Last Answer : (B) 1.2 Vavg
Description : For turbulent flow of Newtonian fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is (A) 0.5 (B) 1 (C) 0.66 (D) < 0.5
Last Answer : (B) 1
Description : A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then ... new manometer reading will be __________ cms. (A) 17 (B) 42 (C) 84 (D) 1.8
Last Answer : __________ cms. (A) 17
Description : he pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Δp. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe ... then the pressure drop in this case will be (A) Δp (B) 2Δp (C) Δp 2 (D) Δp/2
Last Answer : (B) 2Δp
Description : With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss (A) Decreases (B) Increases (C) Remain constant (D) Increases linearly
Last Answer : (C) Remain constant
Description : The most serious disadvantage of an orificemeter is that (A) It is not very accurate (B) It is very costly (C) Most of the pressure drop is not recoverable (D) It is not suitable for measuring gas flow
Last Answer : (C) Most of the pressure drop is not recoverable
Description : The pressure of liquid at throat in a Venturimeter is __________ than that at inlet. (A) Higher (B) Lower (C) Same (D) None of these
Last Answer : Answer: Option B
Description : . In case of turbulent flow of fluid through a circular pipe, the (A) Mean flow velocity is about 0.5 times the maximum velocity (B) Velocity profile becomes flatter and flatter with ... , shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more
Last Answer : (D) Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more
Description : At the point of boundary layer separation in fluid flow, the (A) Shear stress is maximum (B) Velocity gradient is flat (C) Density variation is maximum (D) Shear stress is zero
Last Answer : Option A
Description : 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. (A) Newtonian (B) Pseudo-plastic (C) Dilatent (D) Bingham plastic
Last Answer : (B) Pseudo-plastic
Description : The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for __________ fluid. (A) Newtonian (B) Dilatant (C) Pseudo-plastic (D) Non-Newtonian
Last Answer : (A) Newtonian
Description : 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 __________ fluid. (A) Dilatent (B) Pseudo-plastic (C) Bingham plastic (D) Newtonian
Last Answer : (A) Dilatent
Description : The velocity of the liquid flowing through the divergent portion of a Venturimeter (A) Remains constant (B) Increases (C) Decreases (D) Depends upon mass of liquid
Description : The pressure intensity is the same in all directions at a point in a fluid (A) Only when the fluid is frictionless (B) Only when the fluid is at rest having zero velocity (C) When there is ... relative to an adjacent layer (D) Regardless of the motion of one fluid layer relative to an adjacent layer
Last Answer : C) When there is no motion of one fluid layer relative to an adjacent layer
Description : Pick out the wrong statement. (A) Surface tension of a liquid is because of the difference in magnitude of adhesive & cohesive forces (B) A hydrometer used for the determination of ... Turbulent fluid flow is characterised by the rapid fluctuation of instantaneous pressure & velocity at a poin
Last Answer : (C) In case of unsteady fluid flow, the velocity at any given point does not change with time
Description : The exit cone angle in case of a standard Venturimeter is __________ the entrance cone angle. (A) Smaller than (B) Greater than (C) Equal to (D) Either (A) or (B)
Last Answer : (A) Smaller than
Description : Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position. (A) Horizontal (B) Vertical (C) Inclined (D) Any
Last Answer : (D) Any
Description : The discharge through a Venturimeter depends upon (A) Pressure drop only (B) Its orientation (C) Co-efficient of contraction only (D) None of these
Last Answer : (A) Pressure drop only
Description : A Venturimeter cannot be used for the direct measurement of (A) Datum difference in the stretch of pipe-flow (B) Pressure difference in the flow through pipeline (C) Friction loss in pipe flow (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)