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Fluid Mechanics & Hydraulics MCQs with Answers & Solutions | Civexa

Subjects / Fluid Mechanics & Hydraulics / MCQs

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Fluid Mechanics & Hydraulics MCQs with answers

343 free questions — page 1 of 7. Open one to see the correct answer and the full solution.

The nominal thickness of a boundary layer is generally considered as the distance from the wall to the point where the flow velocity isBoundary Layer Theory
The velocity profile in a laminar boundary layer over a flat plate can be best described by which of the following profile?Boundary Layer Theory
The local drag coefficient (Cf) at a point on a flat plate is defined asBoundary Layer Theory
The Reynolds stress in a turbulent boundary layer is associated withTurbulent Flow
Which dimensionless number is used to determine whether the flow is dominated by inertial or viscous forces?Dimensional Analysis and Similitude
In a streamlined body, the drag force is primarily due toFluid Dynamics
The Magnus effect is related toFlow Past Immersed Bodies
The term 'stagnation pressure' refers to the pressure at a point whereFluid Dynamics
The Darcy-Weisbach equation is expressed asFlow Through Pipes
For smooth pipes, the friction factor in laminar flow is given byLaminar Flow
The equivalent length method in pipe networks accounts forFlow Through Pipes
The force exerted by a jet on a moving flat plate isImpact of Jets
In an open channel flow, the velocity is maximum atOpen Channel Flow
In gradually varied flow, the flow profile is determined byGradually Varied Flow
The specific energy curve is used to analyzeSpecific Energy in Open Channel Flow
In a specific energy diagram, alternate depths are locatedSpecific Energy in Open Channel Flow
When the specific energy is greater than the minimum specific energy, the flow can beSpecific Energy in Open Channel Flow
What is the primary difference between uniform and non-uniform flow in the open channels?Open Channel Flow
For turbulent flow in rough pipes, the velocity distribution near the wall is modified to account for roughness. The equivalent roughness height ks…Turbulent Flow
The friction loss in a non-circular conduit for turbulent flow is generallyFlow Through Pipes
The sum of the static head and elevation head provides the contour ofFluid Dynamics
The volume flow rate through a pipe isLaminar Flow
The broad crested weir with width B and the height of the liquid surface upstream of weir as H is one for whichWeirs and Notches
The energy loss ΔE in a hydraulic jump depends onHydraulic Jump
Pipe network problems are solved based onFlow Through Pipes
For a Pelton wheel turbine, the velocity of the wheel at the pitch circle is proportional toHydraulic Machines
The discharge through a Francis turbine depends onHydraulic Machines
The distorted models used in the hydraulic studies are those whichDimensional Analysis and Similitude
In an open channel flow, the Saint Venant equation representsOpen Channel Flow
A centrifugal pump is required to lift 2.8 cum/s of water to a height of 7.5m. If the total loss of head in the pipe system is 0.25 m and the…Hydraulic Machines
Which of the following statements regarding the "Viscosity" of fluids are correct? 1. The dynamic viscosity of liquids decreases with an increase in…Fluid Properties
In Fluid Kinematics, a Flow Net is a graphical representation used for the analysis ofFluid Kinematics
A Hydraulic Jump occurs in an open channel when the flow changes fromOpen Channel Flow
The Magnus Effect is a phenomenon associated with the generation ofFlow Past Immersed Bodies
Consider the following statements regarding Pipe Networks 1. In a parallel pipe system, the head loss is the same in all branches. 2. In a series…Flow Through Pipes
For a body moving through a fluid, Skin Friction Drag is primarily caused byFluid Dynamics
In Open Channel Flow, the flow is characterized as critical whenOpen Channel Flow
In a Centrifugal Pump, the primary function of the Volute Casing is toHydraulic Machines
Consider the following statements regarding Air Vessels used in Reciprocating Pumps: 1. Air vessels are used to obtain a continuous supply of liquid…Hydraulic Machines
Which type of hydraulic turbine is most suitable for a project with a Low Head (less than 30 m) and a High Discharge?Hydraulic Machines
A Draft Tube is an essential component of a Reaction Turbine because itHydraulic Machines
In the layout of a power house, the Surge Tank is provided in the penstock line primarily toHydraulic Machines
The cavitation phenomenon in hydraulic turbines typically occurs atHydraulic Machines
In a natural open channel flow system with a mobile bed, which of the following statements is correct?Open Channel Flow
A right–circular cylinder, open at the top, is filled with the liquid of relative density 1.2. It is rotated about its vertical axis at such a speed…Fluid Statics
An open circular cylinder 40 cm diameter and 100 cm long contains water up to a height of 80 cm. The maximum speed at which the cylinder is to be…Fluid Statics
An open cylinder of radius (R) is partly filled with liquid. It is rotated about its axis at (ω) rad/s without spilling. At the walls, the rise of…Fluid Statics
A draft tube in a reaction turbine is used toHydraulic Machines
The velocity potential function in a two dimensional flow field is given by φ = x² – y². The magnitude of velocity at point (1,1) isFluid Kinematics
A fluid jet discharging from a 4 cm diameter orifice has a diameter of 3 cm at its venacontracta. If coefficient of velocity is 0.98, then the…Orifices and Mouthpieces