NEET Test Series from KOTA - 10 Papers In MS WORD
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PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360937
Assertion : Specific gravity of a fluid is a dimensionless quantity. Reason : It is the ratio of density of fluid to the density of water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Specific gravity (or) relative density dimensionless quantity. It is defined as the ratio of the density of a fluid to the density of water. So correct option is (1).
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360938
Assertion : For Reynolds' number \(R_{e}>2000\), the flow of fluid is turbulent Reason : Inertial forces are dominant compared to the viscous forces at such high Reynolds' numbers.
1 Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
\(R_{e}=\) Reynold number \(=\dfrac{\rho v D}{\mu}\) Where \(\rho=\) fluid density \(v=\) velocity \(D=\) diameter of pipe \(\mu=\) kinematic viscosity Theoretically, \(R_{e}=\dfrac{(\text { Inertia-force })}{(\text { Viscous-force })}\) Where intertia force is due to change is momentum of mass of flowing fluid. Viscous force is "friction" type. Of these, when inertial force dominates, the fluid flows faster (as there is no significant opposing force). \(\Rightarrow v\) will be large and \(R_{e}\) will be greater than 2000 and flow is turbulent. So, correct option is (1).
AIIMS - 2005
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360939
A flow of liquid is streamline if the Reynold number is
1 between 2000 to 3000
2 less than 1000
3 between 4000 to 5000
4 greater than 1000
Explanation:
If Reynold number is less than 1000, the flow is streamline. If Reynold number is greater than 2000, the flow is turbulent. If Reynold number lies between 1000 and 2000, the flow becomes unsteady.
KCET - 2014
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360940
When a liquid flows through a tube, the Reynold's number is 900 , the flow of a liquid is
1 changes from a streamline flow to a turbulent flow
2 changes from turbulent flow to a streamline flow
3 streamline
4 turbulent.
Explanation:
For streamline flow, Reynold's number, \(R_{n} < 2000\). Hence flow of liquid is streamline.
360937
Assertion : Specific gravity of a fluid is a dimensionless quantity. Reason : It is the ratio of density of fluid to the density of water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Specific gravity (or) relative density dimensionless quantity. It is defined as the ratio of the density of a fluid to the density of water. So correct option is (1).
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360938
Assertion : For Reynolds' number \(R_{e}>2000\), the flow of fluid is turbulent Reason : Inertial forces are dominant compared to the viscous forces at such high Reynolds' numbers.
1 Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
\(R_{e}=\) Reynold number \(=\dfrac{\rho v D}{\mu}\) Where \(\rho=\) fluid density \(v=\) velocity \(D=\) diameter of pipe \(\mu=\) kinematic viscosity Theoretically, \(R_{e}=\dfrac{(\text { Inertia-force })}{(\text { Viscous-force })}\) Where intertia force is due to change is momentum of mass of flowing fluid. Viscous force is "friction" type. Of these, when inertial force dominates, the fluid flows faster (as there is no significant opposing force). \(\Rightarrow v\) will be large and \(R_{e}\) will be greater than 2000 and flow is turbulent. So, correct option is (1).
AIIMS - 2005
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360939
A flow of liquid is streamline if the Reynold number is
1 between 2000 to 3000
2 less than 1000
3 between 4000 to 5000
4 greater than 1000
Explanation:
If Reynold number is less than 1000, the flow is streamline. If Reynold number is greater than 2000, the flow is turbulent. If Reynold number lies between 1000 and 2000, the flow becomes unsteady.
KCET - 2014
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360940
When a liquid flows through a tube, the Reynold's number is 900 , the flow of a liquid is
1 changes from a streamline flow to a turbulent flow
2 changes from turbulent flow to a streamline flow
3 streamline
4 turbulent.
Explanation:
For streamline flow, Reynold's number, \(R_{n} < 2000\). Hence flow of liquid is streamline.
360937
Assertion : Specific gravity of a fluid is a dimensionless quantity. Reason : It is the ratio of density of fluid to the density of water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Specific gravity (or) relative density dimensionless quantity. It is defined as the ratio of the density of a fluid to the density of water. So correct option is (1).
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360938
Assertion : For Reynolds' number \(R_{e}>2000\), the flow of fluid is turbulent Reason : Inertial forces are dominant compared to the viscous forces at such high Reynolds' numbers.
1 Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
\(R_{e}=\) Reynold number \(=\dfrac{\rho v D}{\mu}\) Where \(\rho=\) fluid density \(v=\) velocity \(D=\) diameter of pipe \(\mu=\) kinematic viscosity Theoretically, \(R_{e}=\dfrac{(\text { Inertia-force })}{(\text { Viscous-force })}\) Where intertia force is due to change is momentum of mass of flowing fluid. Viscous force is "friction" type. Of these, when inertial force dominates, the fluid flows faster (as there is no significant opposing force). \(\Rightarrow v\) will be large and \(R_{e}\) will be greater than 2000 and flow is turbulent. So, correct option is (1).
AIIMS - 2005
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360939
A flow of liquid is streamline if the Reynold number is
1 between 2000 to 3000
2 less than 1000
3 between 4000 to 5000
4 greater than 1000
Explanation:
If Reynold number is less than 1000, the flow is streamline. If Reynold number is greater than 2000, the flow is turbulent. If Reynold number lies between 1000 and 2000, the flow becomes unsteady.
KCET - 2014
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360940
When a liquid flows through a tube, the Reynold's number is 900 , the flow of a liquid is
1 changes from a streamline flow to a turbulent flow
2 changes from turbulent flow to a streamline flow
3 streamline
4 turbulent.
Explanation:
For streamline flow, Reynold's number, \(R_{n} < 2000\). Hence flow of liquid is streamline.
360937
Assertion : Specific gravity of a fluid is a dimensionless quantity. Reason : It is the ratio of density of fluid to the density of water.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Specific gravity (or) relative density dimensionless quantity. It is defined as the ratio of the density of a fluid to the density of water. So correct option is (1).
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360938
Assertion : For Reynolds' number \(R_{e}>2000\), the flow of fluid is turbulent Reason : Inertial forces are dominant compared to the viscous forces at such high Reynolds' numbers.
1 Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
\(R_{e}=\) Reynold number \(=\dfrac{\rho v D}{\mu}\) Where \(\rho=\) fluid density \(v=\) velocity \(D=\) diameter of pipe \(\mu=\) kinematic viscosity Theoretically, \(R_{e}=\dfrac{(\text { Inertia-force })}{(\text { Viscous-force })}\) Where intertia force is due to change is momentum of mass of flowing fluid. Viscous force is "friction" type. Of these, when inertial force dominates, the fluid flows faster (as there is no significant opposing force). \(\Rightarrow v\) will be large and \(R_{e}\) will be greater than 2000 and flow is turbulent. So, correct option is (1).
AIIMS - 2005
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360939
A flow of liquid is streamline if the Reynold number is
1 between 2000 to 3000
2 less than 1000
3 between 4000 to 5000
4 greater than 1000
Explanation:
If Reynold number is less than 1000, the flow is streamline. If Reynold number is greater than 2000, the flow is turbulent. If Reynold number lies between 1000 and 2000, the flow becomes unsteady.
KCET - 2014
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
360940
When a liquid flows through a tube, the Reynold's number is 900 , the flow of a liquid is
1 changes from a streamline flow to a turbulent flow
2 changes from turbulent flow to a streamline flow
3 streamline
4 turbulent.
Explanation:
For streamline flow, Reynold's number, \(R_{n} < 2000\). Hence flow of liquid is streamline.
