📝 [PIPE] QB ID: 0418 | PIPE Elements No. 04

If the energy of the incident photon is less than the work function:

For supersonic flow, the pressure of Fluid must decrease as the fluid Flow area of the duct

Density in terms of viscosity is:

Liquids and gases take the following characteristic(s) of their contents.

Alcohol finds use in manometers as:

Which of the following statements about a Newtonian fluid is most accurate?

The normal stress is the same in all directions at a point in fluid:

Which of the following is not a characteristics of fluid pressure?

The length of mercury column at a place at an altitude will change with respect to that at ground in:

All of the following dimensionless parameters are applicable to fluid flow problems except the _____.

Mass density of liquid (ρ) is given by which of the following?

The speed of sound in all fluid is most closely related to all of the following properties except:

Under which condition, the specific weight of water is 1000 kg/m³?

All of the following can be characteristics of fluids except _____.

Which of the following can be used to measure the flow of water in a pipe of diameter 3000 mm?

The liquid pressure at a given depth due to several immiscible liquid is:

The equation of continuity of flow is applicable if:

Uniform flow takes place when:

The continuity equation of an ideal fluid flow:

A pitot tube can be used to measure fluid velocity as described by the Bernoulli’s equation and the relationship between:

In order to avoid evaporation in the pipe line, the pipe line over the ridge in such a way that it is not more than:

The stream function is a useful parameter in describing _____.

For high-speed flows, the potential energy of the fluids are:

McLeod gauge used for low pressure measurement operates on the principle of _____.

A Kaplan turbine is:

The most common method for calculating frictional energy loss for laminar flowing fluids in non circular pipes is:

The parameter f in the expression for head-loss is:

Friction factor for both laminar and turbulent flows can be found plotted in a:

Which of the following is relative to velocity?

Which of the following is the highest head?

For stable equilibrium of floating body is metacenter should lie:

Center of pressure on a inclined plane lies _____.

The line of action of the buoyant forces always acts through the centroid of the_____________

The hydraulic grade line of a pipeline denotes which of the following?

The energy grade line of a pipeline denotes which of the following?

The presence of friction in the energy grade line will always cause the line to slope:

The pitot tube is a device used for measurement of:

Hydrometer is used to find out:

The fluid forces taken into consideration in the Navier-Stokes equation are:

Permissible velocity of water flowing through concrete tunnel, is generally

Orifice refers to an opening

The value of coefficient of discharged in comparison to coefficient of velocity is found to be:

Weir refers to an opening:

Which of the following paraments determine the friction factor of turbulent flow in a rough pipe?

Power transmitted through a pipe is maximum when the loss of head due to friction is:

In a nozzle if back pressure is same as inlet pressure ; then _____.

The flow on two sides of a normal shock wave is called _____.

Which of the following is the basic of Bernoulli’s law for fluid flow?

Which of the following is NOT a characteristic of a fluid pressure?

Refers to the compressibility of a fluid, the fractional change in the fluid volume per unit change in fluid.

A pitot tube can be used to measure fluid velocity as described by the Bernoulli equation and the relationship between:

The ratio of the area to the wetted perimeter is known as _____.

What is the coefficient of contraction?

Where is vena contracta most likely located?

A substance that is able to flow and yields to any force tending to change its shape without changing its volume such as water and air.

The velocity of a fluid particle at the center of the pipe section is _____.

For supersonic flow, the pressure of fluid must increase as the fluid flow area of the duct:

Which is incorrect statement regarding apparent shear forces?

The time required for half a quantity of radioactive particles (disintegrate) called its decay is to _____.

Unit of viscosity is:

For computation convenience, fluids are usually classed as:

Which of the following is not a dimensionless parameter?

Which of the following is not a characteristic of real fluids?

Which of the following is not the mass density of water?

The upper critical Reynolds number for pipe flow is:

Which of the following statements about gauge pressure is most correct? Gauge pressures are measured relative to _____.

The volumetric change of the fluid caused by a resistance is called _____.

Compressibility of a fluid relates the fractional change in fluid volume per unit change in fluid _____.

Property of a fluid whereby its own molecules are attracted is known as _____.

The term subsonic flow refers to a flowing gas with a speed:

The pressure at a point in a fluid will not be same in all the directions if the fluid is:

The statement that “the hydrostatic pressure a fluid exerts on a immersed object or on container walls is a function only if fluid depth” is _____.

Bernoulli’s equation is s/an _____.

An ideal fluid is one that:

The relationship between pressure and altitude in the atmosphere is given by the:

The fact the buoyant force on a floating object equal to the weight of the water displaced is:

Which of the following terms does not appear in the steady flow energy equation (the extended Bernoulli’s equation)?

Neglecting the forces due to inertia, gravity and frictional resistance, the design of a channel can be made by comparing _____.

The difference between stagnation pressure and total pressure is:

Fully turbulent flow in a pipe is characterized by all of the following except:

The laminar friction factor of fluid flowing through a pipe is function of all of the following except:

The continuity equation is applicable to:

The rise or fall of head ‘h’ in a capillary tube of diameter ‘d’ and liquid surface tension ‘s’ and specific weight ‘w’ is given by:

The study of the practical laws of fluid flow and the resistance of open pipes and channels.

Which of the following turbine is different from the others?

Running away speed of a Pelton wheel gives:

Which of the following turbine is different from the others?

The characteristics length of the Reynold’s number used to calculate the friction in noncircular full running pipes is based on the _____.

The Hydraulic radius of noncircular pipe is:

The darcy equation can be used for all liquids and flows except:

The Hazen-Williams formula for head loss due to friction is based upon:

The extended Bernoulli’s equation includes all of the following terms except:

An equipotential line is one that:

What is the use of a hydraulic jump?

What do you call the lowest portion to storage basin from where water is not drawn?

The presence of friction in the hydraulic grade line will always cause the line to slope:

The presence of a minor loss in the energy grade line will cause the line to slope:

What do you call the pressure which the fluid exerts on an immersed object or container walls?

Viscosity for a fluid is defined as the constant of proportionality between shear stress and what other variable?

What is the classification of the fluid flow if the fluid travels parallel to the adjacent layers and the paths of the individual particles do not cross each other?

Which of the following refers to the measure of a fluid’s sensitivity to changes in viscosity with changes in temperature?

If the Mach number is greater than 1 but lesser than 5, what is the standard classification of the travel?

What is measured by a Pitot tube?

What is the difference between the energy grade line and the hydraulic grade line?

Kinetic energy is not neglected in calculations of:

Discharge losses through orifice are due to:

Which of the following is considered as an important parameter in the study of compressible flow?

Is the velocity at which an infinitesimal small pressure wave travels through a medium.

It is the ratio of the actual velocity of the fluid to the velocity of sound.

The flow is called sonic when Mach number is:

The following flow is sub-sonic when Mach no. is:

The flow is supersonic when Mach no. is:

The flow is transonic when:

The pressure decreases as the temperature and velocity increases while the fluid velocity and Mach number:

The Mach number is unity or one at the location of smallest flow area, called the:

What happens to the velocity of fluid after passing the throat although the flow area?

Which of the following is an example of a Newtonian fluid?

What is the critical pressure of water?

The volumetric change of the fluid caused by a resistance is called:

The energy of a fluid flowing at any section in a pipeline is a function of:

If the fluid travels parallel to the adjacent layers and the paths of individual particles do not cross, the fluid is said to be:

Center of pressure on an inclined plane lies:

At any instant, if the number of particles passing every cross-section of the stream is the same, the flow is said to be:

The ratio of cross- sectional area of flow to the wetted perimeter is:

If A is the cross-sectional area of the flow and Pw is the wetted perimeter of a pipe, then what is the hydraulic depth, H?

If Q is the volume in gallon, D is height or elevation in ft, and m is weight in lbs per gallon, what is the desired energy to lift the water from lower to higher elevation?

The flow of the convergent section of a nozzle is always subsonic. If the flow is subsonic then Mach number is: