10. Continuity Equation and Bernoulli's Principle and It’s Application
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Mechanical Properties of Fluids

143415 Assertion: Bernoulli's theorem is applicable only on laminar flow.
Reason: Laminar flow is consider to be nonviscous.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-26.05.2018(E)
Mechanical Properties of Fluids

143420 A cylindrical vessel of radius $r$ containing a liquid is rotating about a vertical axis through the centre of circular base. If the vessel is rotating with angular velocity $\omega$, then what is difference of the height of liquid at the centre of vessel and edge?

1 $\frac{\mathrm{r} \omega}{2 \mathrm{~g}}$
2 $\frac{r^{2} \omega^{2}}{2 g}$
3 $\sqrt{2 \operatorname{gr} \omega}$
4 $\frac{\omega^{2}}{2 \mathrm{gr}^{2}}$
BCECE-2016
Mechanical Properties of Fluids

143421 At what speed, the velocity head of water is equal to pressure head of $\mathbf{4 0} \mathbf{c m}$ of $\mathbf{H g}$ ?

1 $10.3 \mathrm{~m} / \mathrm{s}$
2 $2.8 \mathrm{~m} / \mathrm{s}$
3 $5.6 \mathrm{~m} / \mathrm{s}$
4 $8.4 \mathrm{~m} / \mathrm{s}$
BCECE-2008
Mechanical Properties of Fluids

143423 Water flows through a horizontal pipe at a speed ' $V$ '. Internal diameter of the pipe is ' $d$ '. If the water is emerging at a speed ' $V_{1}$ ' then the diameter of the nozzle is

1 $\frac{d V_{1}}{\mathrm{~V}}$
2 $\frac{\mathrm{V}}{\mathrm{V}_{1}}$
3 $d \sqrt{\frac{V}{V_{1}}}$
4 $d \sqrt{\frac{V_{1}}{V}}$
MHT-CET 2020
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Mechanical Properties of Fluids

143415 Assertion: Bernoulli's theorem is applicable only on laminar flow.
Reason: Laminar flow is consider to be nonviscous.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-26.05.2018(E)
Mechanical Properties of Fluids

143420 A cylindrical vessel of radius $r$ containing a liquid is rotating about a vertical axis through the centre of circular base. If the vessel is rotating with angular velocity $\omega$, then what is difference of the height of liquid at the centre of vessel and edge?

1 $\frac{\mathrm{r} \omega}{2 \mathrm{~g}}$
2 $\frac{r^{2} \omega^{2}}{2 g}$
3 $\sqrt{2 \operatorname{gr} \omega}$
4 $\frac{\omega^{2}}{2 \mathrm{gr}^{2}}$
BCECE-2016
Mechanical Properties of Fluids

143421 At what speed, the velocity head of water is equal to pressure head of $\mathbf{4 0} \mathbf{c m}$ of $\mathbf{H g}$ ?

1 $10.3 \mathrm{~m} / \mathrm{s}$
2 $2.8 \mathrm{~m} / \mathrm{s}$
3 $5.6 \mathrm{~m} / \mathrm{s}$
4 $8.4 \mathrm{~m} / \mathrm{s}$
BCECE-2008
Mechanical Properties of Fluids

143423 Water flows through a horizontal pipe at a speed ' $V$ '. Internal diameter of the pipe is ' $d$ '. If the water is emerging at a speed ' $V_{1}$ ' then the diameter of the nozzle is

1 $\frac{d V_{1}}{\mathrm{~V}}$
2 $\frac{\mathrm{V}}{\mathrm{V}_{1}}$
3 $d \sqrt{\frac{V}{V_{1}}}$
4 $d \sqrt{\frac{V_{1}}{V}}$
MHT-CET 2020
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Mechanical Properties of Fluids

143415 Assertion: Bernoulli's theorem is applicable only on laminar flow.
Reason: Laminar flow is consider to be nonviscous.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-26.05.2018(E)
Mechanical Properties of Fluids

143420 A cylindrical vessel of radius $r$ containing a liquid is rotating about a vertical axis through the centre of circular base. If the vessel is rotating with angular velocity $\omega$, then what is difference of the height of liquid at the centre of vessel and edge?

1 $\frac{\mathrm{r} \omega}{2 \mathrm{~g}}$
2 $\frac{r^{2} \omega^{2}}{2 g}$
3 $\sqrt{2 \operatorname{gr} \omega}$
4 $\frac{\omega^{2}}{2 \mathrm{gr}^{2}}$
BCECE-2016
Mechanical Properties of Fluids

143421 At what speed, the velocity head of water is equal to pressure head of $\mathbf{4 0} \mathbf{c m}$ of $\mathbf{H g}$ ?

1 $10.3 \mathrm{~m} / \mathrm{s}$
2 $2.8 \mathrm{~m} / \mathrm{s}$
3 $5.6 \mathrm{~m} / \mathrm{s}$
4 $8.4 \mathrm{~m} / \mathrm{s}$
BCECE-2008
Mechanical Properties of Fluids

143423 Water flows through a horizontal pipe at a speed ' $V$ '. Internal diameter of the pipe is ' $d$ '. If the water is emerging at a speed ' $V_{1}$ ' then the diameter of the nozzle is

1 $\frac{d V_{1}}{\mathrm{~V}}$
2 $\frac{\mathrm{V}}{\mathrm{V}_{1}}$
3 $d \sqrt{\frac{V}{V_{1}}}$
4 $d \sqrt{\frac{V_{1}}{V}}$
MHT-CET 2020
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Mechanical Properties of Fluids

143415 Assertion: Bernoulli's theorem is applicable only on laminar flow.
Reason: Laminar flow is consider to be nonviscous.

1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
AIIMS-26.05.2018(E)
Mechanical Properties of Fluids

143420 A cylindrical vessel of radius $r$ containing a liquid is rotating about a vertical axis through the centre of circular base. If the vessel is rotating with angular velocity $\omega$, then what is difference of the height of liquid at the centre of vessel and edge?

1 $\frac{\mathrm{r} \omega}{2 \mathrm{~g}}$
2 $\frac{r^{2} \omega^{2}}{2 g}$
3 $\sqrt{2 \operatorname{gr} \omega}$
4 $\frac{\omega^{2}}{2 \mathrm{gr}^{2}}$
BCECE-2016
Mechanical Properties of Fluids

143421 At what speed, the velocity head of water is equal to pressure head of $\mathbf{4 0} \mathbf{c m}$ of $\mathbf{H g}$ ?

1 $10.3 \mathrm{~m} / \mathrm{s}$
2 $2.8 \mathrm{~m} / \mathrm{s}$
3 $5.6 \mathrm{~m} / \mathrm{s}$
4 $8.4 \mathrm{~m} / \mathrm{s}$
BCECE-2008
Mechanical Properties of Fluids

143423 Water flows through a horizontal pipe at a speed ' $V$ '. Internal diameter of the pipe is ' $d$ '. If the water is emerging at a speed ' $V_{1}$ ' then the diameter of the nozzle is

1 $\frac{d V_{1}}{\mathrm{~V}}$
2 $\frac{\mathrm{V}}{\mathrm{V}_{1}}$
3 $d \sqrt{\frac{V}{V_{1}}}$
4 $d \sqrt{\frac{V_{1}}{V}}$
MHT-CET 2020
NEET DIGITAL LIBRARY