a) unstable turbulent

b) stable laminar

c) turbulent

a) ∆P_(l.r.)=ξ_(l.r.) (ρω^2)/2

b) ∆p_coil=ψ*∆p_str

c) P/ρg+Z=∆p

a)     Temperature, pressure, chemical properties of substances

b)    Density, porosity

c)     Viscosity, volume, pressure

d)    Volume, pressure

e)     Viscosity, pressure

a)       Absorption, distillation and rectification

b)     Thermal and energy balances

c)     A number of similar processes, such as moving liquids and gases, heating and cooling, drying, chemical interaction, etc.

d)      Absorption and rectification

e)      Thermal balances

a)     Hydromechanical, Thermal, Diffusion, Chemical, Mechanical processes

b)    Absorption, distillation and rectification processes

c)     Adsorption, drying, crystallization processes

d)    Hydromechanical, Chemical, Mechanical processes

e)     Adsorption, crystallization processes

a) ∆h_(l.r.)=ξ_(l.r.) ω^2/2g

b) ∆h=ω^2/2g

c) h_friction=λ l/d ω^2/2g

a) de=SP

1. de=4ab2(a+b)=2ab(a+b)

de=4rh

a)     The main law of kinetics

b)    Newton’s law

c)     Reynolds’s law

d)    Hydraulics law

e)     Thermodynamic law

a)      Kg/m

b)     Kg/m²

c)     Kg/m³

d)    Kg/Pa

e)      Kg/m4

a)     the number of products obtained for a given quality

b)    Fluid velocity and flow rate

c)     Steady and unsteady flows

d)    Vertical and horizontal equipments

e)     Single- and multi-stage

 ω=Q/S

dQFdτ=∆tRt

Rh =S/П

dMFdτ=∆CRC

γ=GV

a) σ

b) τ

c) Re

a) dQFdτ=∆tRt

b) dMFdτ=∆CRC

c) ω=Q/S

d) Rh =S/П

e) γ=GV

a) μ=ϑρ

ϑ=μ/ρ

c) ρ=μ/ϑ

a) Re≈2320

b) Re<2320

c) 2320<Re<10,000

a) a measure of the relationship between the forces of viscosity and inertia in a moving flow

b) the hydraulic resistance of pipelines and apparatuses and the associated energy inputs depend on the mode of motion

c) The main characteristic of the channels of a non-circular and complex section (complex configuration)

a)     The motion of a medium or particles in it

b)    The loss of pressure on friction

c)     the movement of solids in droplet liquids or gases

d)    Processes of the hydraulic resistance of pipelines and apparatuses

e)     Processes of spontaneous heat transfer from a medium with a higher temperature to a medium with a l

a)     Processes of the movement of solids in droplet liquids or gases

b)    Processes of the hydraulic resistance of pipelines and apparatuses

c)     Processes of spontaneous heat transfer from a medium with a higher temperature to a medium with a lower temperature

d)    The motion of a medium or particles in it

e)     The loss of pressure on friction

a)     the laws of equilibrium and motion of different liquids

b)    the area of mathematics and physics concerned with the relationships between force, matter, and motion among physical objects

c)     combining the results of multiple primary research studies aimed at testing the same conceptual hypothesis

d)    The motion of a medium or particles in it

e)     The loss of pressure on friction

a)M=ρωS

b) M=νω

c) M=µωV

a) diameter of a hypothetical circular section pipeline, for which the ratio of the area S to the wetted perimeter П is the same as for this non-circular section pipeline

b) the hydraulic radius takes the ratio of the area of the flooded section of the pipeline or channel through which the liquid flows

c) cross-section of the flow per unit of time is called the flow rate of the liquid

a)     its density and volume do not depend on temperature

b)    It is compressible

c)     it has viscosity

d)    The motion of a medium or particles in it

e)     The loss of pressure on friction

a)     Density and specific gravity

b)    Pressure, temperature

c)     Viscosity, volume, pressure

d)    The motion of a medium or particles in it

e)     The loss of pressure on friction

ω=QS; [kg/mm]

γ=GV; [N/m3]

Rh =SP; [m]

dQFdτ=∆tRt ; [kg/mm

dMFdτ=∆CRC; [kg/mm]

PV=mMRT

PV=mMRW

PV=mMRS

ω=QS

γ=GV

Pt=01-β∆t

PV=mMRT

Rh =SP

ω=QS;

γ=GV;

a) unsteady

b) steady

c) laminar

a) 1883

b) 1888

c) 1800

a) unsteady 

b) steady

c) laminar

a)790 mm Hg, 1.033 kgf/cm2

b) 700 mm Hg, 1.033 kgf/cm2

c) 760 mm Hg, 1.033 kgf/cm2

d) 890 mm Hg, 1.033 kgf/cm2

e) 800 mm Hg, 1.033 kgf/cm2

a) 746,9 mm Hg, 1 kgf/cm2

b) 755,9 mm Hg, 1 kgf/cm2

c) 736,6 mm Hg, 1 kgf/cm2

d) 890 mm Hg, 1.033 kgf/cm2

e) 800 mm Hg, 1.033 kgf/cm2

a) μ=ϑρ, m2/s

b) ϑ=, m2/s

c) ρ=, m2/s

d)ω=QS; [kg/mm]

e) γ=GV; [N/m3]

a) transferring the quantity motion in fluid flow to the thermal motion of the molecules

b) Processes of the movement of solids in droplet liquids or gases

c) The loss of pressure on friction

F)     combining the results of multiple primary research studies aimed at testing the same conceptual hypothesis

G)    Is subject and task of technology, which determines the conditions of natural sciences

a) the transfer of momentum

b) transferring the quantity motion

c) The loss of pressure on friction

d) transferring the quantity motion in fluid flow to the thermal motion of the molecules

e) Processes of the movement of solids in droplet liquids or gase

a) cross-section area, S

b) volume, V

c) surface tension, σ

d) pressure, ρ

e) viscosity, µ

1. a) PV=mMRT

b) Pρg+Z=H=const

c) dQFdτ=∆tRt

d)    PV

Pρg

1. PV

1. Pρg

c)dQFdτ

a) Vaver=S02ghm(m-)

b) ∆h=22g

c) P1ρg+22g+Z1=P2ρg+22g+Z2+hloss

a) P=P1*ρg

b) P=mMRT

c) ρ=μ/ϑ

PV=mMRT

Pρg+Z=H=const

a) the laws of equilibrium and motion of different liquids

b) the equilibrium or state of rest of a fluid

c) combining the results of multiple primary research studies aimed at testing the same conceptual hypothesis

d) the sum of projections on the coordinate axis of all forces acting on an elementary volume in equilibrium is 0.

e) the area of mathematics and physics concerned with the relationships between force, matter, and motion among physical objects

a) the sum of projections on the coordinate axis of all forces acting on an elementary volume in equilibrium is 0.

b) the area of mathematics and physics concerned with the relationships between force, matter, and motion among physical objects

c) combining the results of multiple primary research studies aimed at testing the same conceptual hypothesis

d) the laws of equilibrium and motion of different liquids

e) the equilibrium or state of rest of a fluid

a) Newton’s system (of differential equations)

b) Archimed’s system (of differential equations)

c) Euler’s system (of differential equations)

d) Reynolds’ system (of differential equations)

b) Froud’s system (of differential equations)

a) it’s specific potential energy of liquid pressure

b) it’s specific surface area of liquid pressure

c) it’s specific density of liquid pressure

d) residual in production

e) specific potential energy in production

a) residual in production

b) specific potential energy in production

c) specific density in production

d) it’s specific potential energy of liquid pressure

e) it’s specific surface area of liquid pressure

a) the volume of liquid passing per unit time through the cross section of the flow

b) the mass of the liquid passing per unit time through the cross section of the flow

c) The velocity at different points of the flow cross-section

d) the velocity changes with the change in the coordinates of the point

e) the velocity does not change with the change in the coordinates of the point

a) It’s the amount of liquid flowing through the cross-section of the flow per unit of time

b) It is the amount of substance that passes from one phase to another through the interface or phase contact F

c) It’s the speed of the process is proportional to the driving force and is inversely proportional to the resistanc

a) the volume of liquid passing per unit time through the cross section of the flow

b) the mass of the liquid passing per unit time through the cross section of the flow

c) The velocity at different points of the flow cross-section

d) the velocity changes with the change in the coordinates of the point

e) the velocity does not change with the change in the coordinates of the point

a) S=V/ω

b) V=ωS

c) ω=V/S

d) P=V/ω

e) W=ωS

a) the velocity changes with the change in the coordinates of the point

b) the velocity does not change with the change in the coordinates of the point

c) the velocity changes with the change in time

d) the mass of the liquid passing per unit time through the cross section of the flow

e) The velocity at different points of the flow cross-section

a) the velocity changes with the change in the coordinates of the point

b) the velocity does not change with the change in the coordinates of the point

c) the velocity changes with the change in time

d) the mass of the liquid passing per unit time through the cross section of the flow

e) The velocity at different points of the flow cross-section

a) It’s the main characteristic of the channels of a non-circular and complex section (complex configuration). rh=SP

b) It’s a characteristic of the flow regime. Re=ωdρ

c) It’s energy that dissipates into the environment. Pρg+Z=H=const

b) It’s a characteristic of the flow regime. rh=SP

c) It’s energy that dissipates into the environment. Re=ωdρ=const

a) rh=SP

b) rh=ab2(a+b)

c) rh=4d2πd=de4

d) rh=SP

rh=ab2(a+b)

a) rh=ab2(a+b)

b) rh=SP

c) rh=4d2πd=de4

Re=ωdρ/μ

b) Re=Vdρn

Re=ωdρ/ϑ

a) It’s complete mixing of liquid layers at Re ≥104

b) It’s layers of liquid do not mix at flow. It occurs for straight smooth tubes at Re≤2300

c) It’s layers of liquid do not mix at flow. It exists at 2300 <Re <104

a) It is the ratio of the pore volume Vpore to the volume of the layer Vlayer , i.e. the fraction of the free volume (0.4 <ε <1)

b) It’s the main characteristic of the channels of a non-circular and complex section (complex configuration)

c) it’s specific surface area of liquid pressure

a) It’s complete mixing of liquid layers at Re ≥104

b) It’s layers of liquid do not mix at flow. It occurs for straight smooth tubes at Re≤2300

c) It’s layers of liquid do not mix at flow. It exists at 2300 <Re <104

a) It equals to more part of maximum velocity;

aver≈(0,80,9)max

4. It equals to half of maximum velocity;aver=0.5max

   
   

4. It equals to maximum velocity;

aver=max

a) Ga=ωτ/l

b) Ga=〖Re〗^2/Fr=(ω^2 l^2 gl)/(ϑ^2 ω^2 )=〖gl〗^3/ϑ^2

c) Ga=ωdρ/μ

a) It equals to more part of maximum velocity; aver≈(0,80,9)max

b) It equals to half of maximum velocity; aver=0.5max

c) It equals to maximum velocity; aver=max

a) It is the ratio of the pore volume Vpore to the volume of the layer Vlayer , i.e. the fraction of the free volume (0.4 <ε <1)

b) It’s the main characteristic of the channels of a non-circular and complex section (complex configuration)

c) it’s specific surface area of liquid pressure

h_friction=λ l/d ω^2/2g

b) ∆h=22g

c) P1ρg+22g+Z1=P2ρg+22g+Z2+hloss

a) It’s energy that dissipates into the environment

b) It’s the main characteristic of the channels of a non-circular and complex section (complex configuration)

c) It’s layers of liquid do not mix at flow

a) ) P/ρg+Z=∆p_coil

∆p_coil=ψ*∆p_str

c) ∆pcoil=P1ρg+22g+Z1

a) ψ=1+3.54 d/D

b) ψ=1.5+d/D

c) ψ=1+0.5 d/D

a) -∂p∂z+2Wx∂x2+2Wy∂y22Wz∂z2-ρg=Wz∂τ+WxWz∂x+WyWy∂y+WzWz∂z

b) P1ρg+22g+Z1=P2ρg+22g+Z2+hloss

c) PV=mMRT

a) ∆h_(l.r.)=ξ_(l.r.) ω^2/2g

b) ∆h_lost=(λ l/d+∑▒〖ξ_(l.r.))〗 ω^2/2g

c) h_friction=λ l/d ω^2/2g

a) d=1/(∑_(i=1)^n▒x_i/d_i )

b) d_e=4 ab/(2(a+b))=2ab/((a+b))

c) d_e=4r_h

a) Eu=ωdρ

b) Eu=∆p/(ρω^2 )

c) Eu=2gl

a) ω_sed=0.5ω_max

b) ω_sed=V_c/l

ω_sed=√((4gd(ρ_s-ρ))/3ζρ)

a) Fr=ωdρ/μ

b) Fr=∆p2

c)r=ω^2/gl

a) Ho=ωτ/l

b) Ho=ω^2/gl

c) Ho=ωdρ/μ

a) Ga=ωτ/l

b) Ga=〖Re〗^2/Fr=(ω^2 l^2 gl)/(ϑ^2 ω^2 )=〖gl〗^3/ϑ^2

c) Ga=ωdρ/μ

a) It is the ratio of the pore volume Vpore to the volume of the layer Vlayer , i.e. the fraction of the free volume (0.4 <ε <1)

b) It’s the main characteristic of the channels of a non-circular and complex section (complex configuration)

c) it’s specific surface area of liquid pressur

a) chemical, physical modeling

b) physical, analytical modeling

c) mathematical, chemical modeling

a) numerically equal similarity criteria

b) the equipment of the model and nature should not be geometrically similar

c) physical quantities must not be observed

a) can be obtained in a criterion form

b) numerically equal similarity criteria

c) physical quantities must not be observed

Are transferred to the fluid by flowing around the blades of a rotating impeller or several pump wheels.

Are displaced from a closed space by a reciprocating body (piston, plunger, diaphragm pumps) or having rotational motion (gear, plate, screw pumps).

where the material that is pumped assists in creating the motive force needed to move through the pump.

a) Similarity constants are convenient

b) then the ratio of the duration of the eponymous stages of the process in

nature and the model are equal to the same value

c)the size of the nature changes with respect to the model

a) inertia forces begin to play an increasingly important role

b) the boundary layer opens from the surface of the body

c) overcoming the friction resistance

a) surface of the body

b) smoothly flows around the flow

c) overcoming the friction resistance

a) R=ψS ω^2/2

b) R=ζS (ρω^2)/2

c) R=λS (ρω^2)/2g

a) ζ=24/Re

a) ζ=24/Re

c) ζ=0.44=const

a) =24Re

b) =18.5Re0.6

c) =0.44=const

e medium equals to …

a) ζ=24/Re

b) ζ=(18.5)/〖Re〗^(0.6)

c) ζ=0.44=const

a) Ф=Fs/F

b) Ф=F*S

c) Ф=1

a) V=SP

b) V=m/ρ_s =nd^2/6

c)V=d24

a) transition

b) laminar

c) turbulent

a) transition

b) laminar

c) turbulent

a) unstable turbulent

b) stable laminar

c) turbulent

The hydraulic machines that convert the mechanical energy of the engine into the energy of the fluid being moved, increasing its pressure.

a conical nozzle at the end of the tube for regulating the outgoing jet of liquid or gas.

a channel of variable or constant cross-section of round, rectangular or other shape, designed to supply liquids or gases at a certain speed and in the desired direction.

Jet and piston

Vortex and vane

Dynamic and volumetric

a type of pump that delivers kinetic energy to the working fluid and increases the fluid velocity

includes pumps in which the liquid is displaced from a closed space by a reciprocating body (piston, plunger, diaphragm pumps) or having rotational motion (gear, plate, screw pumps).

the liquid moves (is displaced) with a periodic change in the closed volume of the liquid, which periodically communicates with the inlet to the pump and the outlet from it.

a type of pump that delivers kinetic energy to the working fluid and increases the fluid velocity.

also known as a kinetic pump because it pumps the fluid by providing kinetic energy.

the liquid moves (is displaced) with a periodic change in the closed volume of the liquid, which periodically communicates with the inlet to the pump and the outlet from it.

Volumetric

Dynamic

Vortex

Centrifugal and axial pumps

Dynamic and volumetric pumps

Vortex and jet pumps

Are transferred to the fluid by flowing around the blades of a rotating impeller or several pump wheels.

Are displaced from a closed space by a reciprocating body (piston, plunger, diaphragm pumps) or having rotational motion (gear, plate, screw pumps).

are dynamic pumps in which the fluid moves mainly under the action of friction forces.

Volumetric

Dynamic

Vortex

Centrifugal and axial pumps

Dynamic and volumetric pumps

Vortex and jet pumps