Hydraulics And Fluid Mechanics In Me — Part 2 MCQs with Explanations

Inertia force is the correct answer to “The product of mass and acceleration of flowing liquid is called”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Kaplan turbine is the correct answer to “Which of the following turbine is preferred for 0 to 25 m head of water”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

All of these is the correct answer to “The force present in a moving liquid is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

The liquid particles at different sections have different velocities is the correct answer to “The flow in a pipe or channel is said to be non-uniform when”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

More than is the correct answer to “The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Fourth power of diameter is the correct answer to “Power required to drive a centrifugal pump is directly proportional to _________ of its impeller.”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

All of these is the correct answer to “Which of the following is an example of laminar flow”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Directly proportional is the correct answer to “According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

$$\frac{{\mu {\pi ^2}{\text{N}}{{\text{R}}^4}}}{{60{\text{t}}}}$$ is the correct answer to “The torque required to overcome viscous resistance of a footstep bearing is (where $$\mu $$ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft and t = Thickness of the oil film)”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

It is easier to see through the glass tube is the correct answer to “A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Less than 8° is the correct answer to “The angle of taper on draft tube is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Hydraulic press is the correct answer to “The working of which of the following hydraulic units is based on Pascal's law”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Streamline flow is the correct answer to “A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Two runners is the correct answer to “A double overhung Pelton wheel has”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

$$\frac{l}{{{{\text{d}}^5}}} = \frac{{{l_1}}}{{{\text{d}}_1^5}} + \frac{{{l_2}}}{{{\text{d}}_2^5}} + \frac{{{l_3}}}{{{\text{d}}_3^5}}$$ is the correct answer to “A compound pipe of diameter d 1 , d 2 and d 3 having lengths $${l_1},\,{l_2}$$ and $${l_3}$$ is to be replaced by an equivalent pipe of uniform diameter d and of the same length $$l$$ as that of the compound pipe. The size of the equivalent pipe is given by”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Reduce acceleration to minimum is the correct answer to “Air vessels in reciprocating pump are used to”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

20-25° is the correct answer to “The optimum value of vane exit angle for a centrifugal pump impeller is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

$$\frac{{{\text{N}}\sqrt {\text{Q}} }}{{{{\text{H}}^{\frac{3}{4}}}}}$$ is the correct answer to “The specific speed (N s ) of a centrifugal pump is given by”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

The water enters at the centre of the wheel and then flows towards the outer periphery of the wheel is the correct answer to “In an outward flow reaction turbine”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

The water enters the wheel at the outer periphery and then flows towards the center of the wheel is the correct answer to “In an inward flow reaction turbine”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

0.75 B.H.P is the correct answer to “If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water, the horse power required will be”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

$$\frac{{2\left( {{{\text{V}}_{\text{r}}} - {\text{v}}} \right){\text{v}}}}{{{\text{V}}_{\text{r}}^2}}$$ is the correct answer to “The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

$$\frac{{4\sigma \cos \alpha }}{{{\text{wd}}}}$$ is the correct answer to “A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, $$\alpha $$ = Angle of contact of the liquid surface and $$\sigma $$ = Surface tension)”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Higher is the correct answer to “The viscosity of water is __________ than that of mercury.”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

High speed with axial flow at outlet is the correct answer to “The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

All of the above is the correct answer to “The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Free vortex motion is the correct answer to “In a centrifugal pump casing, the flow of water leaving the impeller, is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Velocity of flow at inlet to the theoretical jet velocity is the correct answer to “The flow ratio of Francis turbine is defined as the ratio of the”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Diameter of Pelton wheel to the diameter of jet is the correct answer to “The jet ratio is defined as the ratio of the”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

High speed with mixed flow at outlet is the correct answer to “The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Jet pump is the correct answer to “Which of the following pump is successfully used for lifting water to the turbines”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

All of the above is the correct answer to “Which of the following statement is correct as regard to water wheels”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Ratio of absolute viscosity to the density of the liquid is the correct answer to “The kinematic viscosity is the”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

One centipoise is the correct answer to “The viscosity of water at 20°C is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

$$\frac{{{{\text{d}}^2}}}{{12\overline {\text{x}} }} + \overline {\text{x}} $$ is the correct answer to “A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Nappe or vein is the correct answer to “The sheet of water flowing over a notch or a weir is known as”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Submerged weir is the correct answer to “When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Have identical velocities is the correct answer to “Kinematic similarity is said to exist between the model and the prototype, if both of them”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

None of the above is the correct answer to “Dynamic similarity is said to exist between the model and the prototype, if both of them”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.

Are identical in shape, but differ only in size is the correct answer to “Geometric similarity is said to exist between the model and the prototype, if both of them”. This question is standard in competitive examination syllabi for Hydraulics And Fluid Mechanics In Me.