Pipe3 Flashcards
The ratio of the area of the wetted perimeter is known as ___
A. flow factor
B. hydraulic radius
C. Kutter’s C
D. value of K in Darcy-Weisbach formula
hydraulic radius
The extended Bernoulli equation includes all of the following terms except:
A. potential energy
B. kinetic energy
C. nuclear energy
D. friction losses
nuclear energy
The presence of a minor loss in the energy grade line will cause the line to slope:
A. down in the direction of the flow
B. upward in the direction of the flow
C. vertically downward
D. there is no effect of friction on the energy grade line
down in the direction of the flow
Hydrometer is used to find out
A. specific gravity of liquids
B. specific gravity of solids
C. specific gravity of gases
D. relative humidity
specific gravity of liquids
The presence of friction in the hydraulic grade will always cause the line to slope:
A. down in the direction of the flow
B. upward in the direction of the flow
C. level (no slope)
D. there is no effect of friction on the energy grade line
down in the direction of the flow
Bernoulli’s equation is a/an ____
A. momentum equation
B. conservation of energy equation
C. conservation of mass equation
D. equation of state
conservation of energy equation
Mass of density of liquid (rho) is given by which of the following?
A. rho = mass/volume
B. rho = metric slug/m^2
C. rho = kg-sec^2/m^4
D. all of the above
all of the above
McLeod gauge used for low pressure measurement operates on the principle of ___
A. Gas law
B. Boyle’s law
C. Charles law
D. Pascal’s law
Boyle’s law
The relationship between pressure and altitude in the atmosphere is given by the:
A. perfect gas law
B. conservation of mass
C. barometric height relationship
D. first law of thermodynamics
barometric height relationship
Which of the following turbine is different from the others?
A. Fourneyron turbine
B. Francis turbine
C. Kaplan turbine
D. Pelton wheel
Pelton wheel
The continuity equation of an ideal fluid flow:
A. states that the net rate of in - flow into any small volume must be zero
B. applies to irrotational flow only
C. states that the energy remains constant along streamline
D. states that energy is constant everywhere in the fluid
states that energy is constant everywhere in the fluid
The hydraulic grade line of a pipeline denotes which of the following?
A. Total energy
B. Pressure energy
C. Potential energy
D. The sum of pressure energy and potential energy
The sum of pressure energy and potential energy
The line of action of the buoyant forces always act through the centroid of the ___
A. submerged body
B. volume of the floating body
C. volume of the fluid vertically above the body
D. displaced volume of the fluid
displaced volume of the fluid
A pitot tube can be used to measure fluid velocity as described by the Bernoulli equation and the relationship between:
A. kinetic energy and static pressure
B. fluid pressure and static pressure
C. fluid pressure and impact energy
D. pressure and momentum
kinetic energy and static pressure
Permissible velocity of water flowing through concrete tunnel, is generally
A. 4 - 5 m/s
B. 10 - 12 m/s
C. 13 - 16 m/s
D. 20 m/s
4 - 5 m/s
The equation of continuity of flow is applicable if:
A. the flow is one dimensional
B. the flow is steady
C. the velocity is uniform over the cross-section
D. all of the above conditions are together
all of the above conditions are together
The speed of sound in all fluid is most closely related to all of the following properties except ___
A. compressibility
B. density
C. bulk modulus
D. thermal conductivity
thermal conductivity
The term subsonic flow refers to a flowing gas with a speed:
A. less than the local speed of sound
B. equal to the speed of sound
C. greater than the speed of sound
D. much greater than the speed of sound
less than the local speed of sound
Viscosity for a fluid is defined as the constant of proportionality between shear stress and what other variable?
A. the spatial derivative of velocity
B. the time derivative of pressure
C. the time derivative of density
D. the spatial derivative of density
the spatial derivative of velocity
Density in terms of viscosity is:
A. kinematic viscosity / dynamic viscosity
B. dynamic viscosity / kinematic viscosity
C. kinematic viscosity x dynamic viscosity
D. none of the above
dynamic viscosity / kinematic viscosity
The pitot tube is a device used for measurement of
A. pressure
B. flow
C. velocity
D. discharge
velocity
What is the use of Hydraulic jump?
A. increase the flow rate
B. reduce the flow rate
C. reduce the velocity of flow
D. reduce the energy of flow
reduce the energy of flow
Which of the following is not a characteristic of real fluids?
A. Finite viscosity
B. Non-uniform velocity distribution
C. Compressibility
D. Experience of eddy currents and turbulence
Experience of eddy currents and turbulence
Running away speed of a Pelton wheel gives:
A. actual operating speed
B. no load speed
C. full load speed
D. no load speed when governor mechanism fails
no load speed when governor mechanism fails