09. Critical velocity and Reynolds number
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Mechanical Properties of Fluids

143395 The average velocity of water flowing through a pipe of radius $0.5 \mathrm{~cm}$ is $10 \mathrm{~cm} / \mathrm{s}$. The nature of flow is
(Coefficient of viscosity $\eta_{\text {water }}=10^{-3} \mathrm{Ns} / \mathrm{m}^{2}$, density $\rho_{\text {water }}=10^{3} \mathrm{~kg} / \mathrm{m}^{3}$ )

1 turbulent
2 neither turbulent nor streamline
3 streamline
4 either turbulent or streamline
MHT-CET 2019
Mechanical Properties of Fluids

143391 Identify the incorrect statement regarding Reynold's number $\left(\mathbf{R}_{\mathrm{e}}\right)$ :

1 For $R_{e} \lt 1000$, flow is laminar
2 For $1000 \lt \mathrm{R}_{\mathrm{e}} \lt 2000$, flow is steady
3 For $R_{e}>2000$, flow is turbulent
4 $\mathrm{R}_{\mathrm{e}}$ is a dimensionless number
AP EAMCET-19.08.2021
Mechanical Properties of Fluids

143394 A solid sphere falls with a terminal velocity $v$ in $\mathrm{CO}_{2}$ gas. If it is allowed to fall in vacuum,

1 terminal velocity of sphere $=\mathrm{v}$
2 terminal velocity of sphere $ \lt v$
3 terminal velocity of sphere $>v$
4 sphere never attains terminal velocity
AP EMCET(Medical)-2008
Mechanical Properties of Fluids

143386 The onset of turbulence in a liquid is determined by

1 Pascal's law
2 Magnus effect
3 Reynold's number
4 Bernoulli's principle
5 Torricelli's law
Kerala CEE - 2010
For More Updates join with Us
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Mechanical Properties of Fluids

143395 The average velocity of water flowing through a pipe of radius $0.5 \mathrm{~cm}$ is $10 \mathrm{~cm} / \mathrm{s}$. The nature of flow is
(Coefficient of viscosity $\eta_{\text {water }}=10^{-3} \mathrm{Ns} / \mathrm{m}^{2}$, density $\rho_{\text {water }}=10^{3} \mathrm{~kg} / \mathrm{m}^{3}$ )

1 turbulent
2 neither turbulent nor streamline
3 streamline
4 either turbulent or streamline
MHT-CET 2019
Mechanical Properties of Fluids

143391 Identify the incorrect statement regarding Reynold's number $\left(\mathbf{R}_{\mathrm{e}}\right)$ :

1 For $R_{e} \lt 1000$, flow is laminar
2 For $1000 \lt \mathrm{R}_{\mathrm{e}} \lt 2000$, flow is steady
3 For $R_{e}>2000$, flow is turbulent
4 $\mathrm{R}_{\mathrm{e}}$ is a dimensionless number
AP EAMCET-19.08.2021
Mechanical Properties of Fluids

143394 A solid sphere falls with a terminal velocity $v$ in $\mathrm{CO}_{2}$ gas. If it is allowed to fall in vacuum,

1 terminal velocity of sphere $=\mathrm{v}$
2 terminal velocity of sphere $ \lt v$
3 terminal velocity of sphere $>v$
4 sphere never attains terminal velocity
AP EMCET(Medical)-2008
Mechanical Properties of Fluids

143386 The onset of turbulence in a liquid is determined by

1 Pascal's law
2 Magnus effect
3 Reynold's number
4 Bernoulli's principle
5 Torricelli's law
Kerala CEE - 2010
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Mechanical Properties of Fluids

143395 The average velocity of water flowing through a pipe of radius $0.5 \mathrm{~cm}$ is $10 \mathrm{~cm} / \mathrm{s}$. The nature of flow is
(Coefficient of viscosity $\eta_{\text {water }}=10^{-3} \mathrm{Ns} / \mathrm{m}^{2}$, density $\rho_{\text {water }}=10^{3} \mathrm{~kg} / \mathrm{m}^{3}$ )

1 turbulent
2 neither turbulent nor streamline
3 streamline
4 either turbulent or streamline
MHT-CET 2019
Mechanical Properties of Fluids

143391 Identify the incorrect statement regarding Reynold's number $\left(\mathbf{R}_{\mathrm{e}}\right)$ :

1 For $R_{e} \lt 1000$, flow is laminar
2 For $1000 \lt \mathrm{R}_{\mathrm{e}} \lt 2000$, flow is steady
3 For $R_{e}>2000$, flow is turbulent
4 $\mathrm{R}_{\mathrm{e}}$ is a dimensionless number
AP EAMCET-19.08.2021
Mechanical Properties of Fluids

143394 A solid sphere falls with a terminal velocity $v$ in $\mathrm{CO}_{2}$ gas. If it is allowed to fall in vacuum,

1 terminal velocity of sphere $=\mathrm{v}$
2 terminal velocity of sphere $ \lt v$
3 terminal velocity of sphere $>v$
4 sphere never attains terminal velocity
AP EMCET(Medical)-2008
Mechanical Properties of Fluids

143386 The onset of turbulence in a liquid is determined by

1 Pascal's law
2 Magnus effect
3 Reynold's number
4 Bernoulli's principle
5 Torricelli's law
Kerala CEE - 2010
Join With Us for More Updates
Mechanical Properties of Fluids

143395 The average velocity of water flowing through a pipe of radius $0.5 \mathrm{~cm}$ is $10 \mathrm{~cm} / \mathrm{s}$. The nature of flow is
(Coefficient of viscosity $\eta_{\text {water }}=10^{-3} \mathrm{Ns} / \mathrm{m}^{2}$, density $\rho_{\text {water }}=10^{3} \mathrm{~kg} / \mathrm{m}^{3}$ )

1 turbulent
2 neither turbulent nor streamline
3 streamline
4 either turbulent or streamline
MHT-CET 2019
Mechanical Properties of Fluids

143391 Identify the incorrect statement regarding Reynold's number $\left(\mathbf{R}_{\mathrm{e}}\right)$ :

1 For $R_{e} \lt 1000$, flow is laminar
2 For $1000 \lt \mathrm{R}_{\mathrm{e}} \lt 2000$, flow is steady
3 For $R_{e}>2000$, flow is turbulent
4 $\mathrm{R}_{\mathrm{e}}$ is a dimensionless number
AP EAMCET-19.08.2021
Mechanical Properties of Fluids

143394 A solid sphere falls with a terminal velocity $v$ in $\mathrm{CO}_{2}$ gas. If it is allowed to fall in vacuum,

1 terminal velocity of sphere $=\mathrm{v}$
2 terminal velocity of sphere $ \lt v$
3 terminal velocity of sphere $>v$
4 sphere never attains terminal velocity
AP EMCET(Medical)-2008
Mechanical Properties of Fluids

143386 The onset of turbulence in a liquid is determined by

1 Pascal's law
2 Magnus effect
3 Reynold's number
4 Bernoulli's principle
5 Torricelli's law
Kerala CEE - 2010
For More Updates join with Us