Bernoulli’s Principle
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360796 Water flows along a horizontal pipe whose cross-section is not constant. The pressure is \(1\;cm\) of \(H g\) where the velocity is \(35\;cm\;{s^{ - 1}}\). At a point where the velocity is \(65\;cm\;{s^{ - 1}}\), the pressure will be

1 \(0.89\;cm\) of \(Hg\)
2 \(8.9\;cm\) of \(Hg\)
3 \(0.5\;cm\) of \(Hg\)
4 \(1\;cm\) of \(Hg\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360797 At what speed will the velocity of a stream of water be equal to \(20\;cm\) of mercury column ? (Take, \(g = 10\;m{s^{ - 2}}\) )

1 \(6.4\;m{s^{ - 1}}\)
2 \(7.3756\;\,m{s^{ - 1}}\)
3 \(6.4756\;m{s^{ - 1}}\)
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360798 The rate of flow of glycerine of density \(1.25 \times {10^3}\;kg/{m^3}\) through the conical section of a pipe, if the radii of its ends are \(0.1\;m\) and \(0.04\;m\) and the pressure drop across its length is \(10\;N/{m^2}\) is

1 \(5.28 \times {10^{ - 4}}\;{m^3}/s\)
2 \(6.28 \times {10^{ - 4}}\;{m^3}/s\)
3 \(7.28 \times {10^{ - 4}}\;{m^3}/s\)
4 \(8.28 \times {10^{ - 4}}\;{m^3}/s\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360799 Two light balls are suspended as shown in figure. When a stream of air passes through the space between them, the distance between the balls will
supporting img

1 remain same
2 increase
3 may increase or decrease, depending on speed of air
4 decrease
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360800 At what speed, the velocity head of the water is twice the pressure head of \(75\;cm\) of \(Hg\) ?

1 \(10\;m{\rm{/}}s\)
2 \(20\;m{\rm{/}}s\)
3 \(30\;m{\rm{/}}s\)
4 \(40\;m{\rm{/}}s\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360796 Water flows along a horizontal pipe whose cross-section is not constant. The pressure is \(1\;cm\) of \(H g\) where the velocity is \(35\;cm\;{s^{ - 1}}\). At a point where the velocity is \(65\;cm\;{s^{ - 1}}\), the pressure will be

1 \(0.89\;cm\) of \(Hg\)
2 \(8.9\;cm\) of \(Hg\)
3 \(0.5\;cm\) of \(Hg\)
4 \(1\;cm\) of \(Hg\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360797 At what speed will the velocity of a stream of water be equal to \(20\;cm\) of mercury column ? (Take, \(g = 10\;m{s^{ - 2}}\) )

1 \(6.4\;m{s^{ - 1}}\)
2 \(7.3756\;\,m{s^{ - 1}}\)
3 \(6.4756\;m{s^{ - 1}}\)
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360798 The rate of flow of glycerine of density \(1.25 \times {10^3}\;kg/{m^3}\) through the conical section of a pipe, if the radii of its ends are \(0.1\;m\) and \(0.04\;m\) and the pressure drop across its length is \(10\;N/{m^2}\) is

1 \(5.28 \times {10^{ - 4}}\;{m^3}/s\)
2 \(6.28 \times {10^{ - 4}}\;{m^3}/s\)
3 \(7.28 \times {10^{ - 4}}\;{m^3}/s\)
4 \(8.28 \times {10^{ - 4}}\;{m^3}/s\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360799 Two light balls are suspended as shown in figure. When a stream of air passes through the space between them, the distance between the balls will
supporting img

1 remain same
2 increase
3 may increase or decrease, depending on speed of air
4 decrease
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360800 At what speed, the velocity head of the water is twice the pressure head of \(75\;cm\) of \(Hg\) ?

1 \(10\;m{\rm{/}}s\)
2 \(20\;m{\rm{/}}s\)
3 \(30\;m{\rm{/}}s\)
4 \(40\;m{\rm{/}}s\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360796 Water flows along a horizontal pipe whose cross-section is not constant. The pressure is \(1\;cm\) of \(H g\) where the velocity is \(35\;cm\;{s^{ - 1}}\). At a point where the velocity is \(65\;cm\;{s^{ - 1}}\), the pressure will be

1 \(0.89\;cm\) of \(Hg\)
2 \(8.9\;cm\) of \(Hg\)
3 \(0.5\;cm\) of \(Hg\)
4 \(1\;cm\) of \(Hg\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360797 At what speed will the velocity of a stream of water be equal to \(20\;cm\) of mercury column ? (Take, \(g = 10\;m{s^{ - 2}}\) )

1 \(6.4\;m{s^{ - 1}}\)
2 \(7.3756\;\,m{s^{ - 1}}\)
3 \(6.4756\;m{s^{ - 1}}\)
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360798 The rate of flow of glycerine of density \(1.25 \times {10^3}\;kg/{m^3}\) through the conical section of a pipe, if the radii of its ends are \(0.1\;m\) and \(0.04\;m\) and the pressure drop across its length is \(10\;N/{m^2}\) is

1 \(5.28 \times {10^{ - 4}}\;{m^3}/s\)
2 \(6.28 \times {10^{ - 4}}\;{m^3}/s\)
3 \(7.28 \times {10^{ - 4}}\;{m^3}/s\)
4 \(8.28 \times {10^{ - 4}}\;{m^3}/s\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360799 Two light balls are suspended as shown in figure. When a stream of air passes through the space between them, the distance between the balls will
supporting img

1 remain same
2 increase
3 may increase or decrease, depending on speed of air
4 decrease
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360800 At what speed, the velocity head of the water is twice the pressure head of \(75\;cm\) of \(Hg\) ?

1 \(10\;m{\rm{/}}s\)
2 \(20\;m{\rm{/}}s\)
3 \(30\;m{\rm{/}}s\)
4 \(40\;m{\rm{/}}s\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360796 Water flows along a horizontal pipe whose cross-section is not constant. The pressure is \(1\;cm\) of \(H g\) where the velocity is \(35\;cm\;{s^{ - 1}}\). At a point where the velocity is \(65\;cm\;{s^{ - 1}}\), the pressure will be

1 \(0.89\;cm\) of \(Hg\)
2 \(8.9\;cm\) of \(Hg\)
3 \(0.5\;cm\) of \(Hg\)
4 \(1\;cm\) of \(Hg\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360797 At what speed will the velocity of a stream of water be equal to \(20\;cm\) of mercury column ? (Take, \(g = 10\;m{s^{ - 2}}\) )

1 \(6.4\;m{s^{ - 1}}\)
2 \(7.3756\;\,m{s^{ - 1}}\)
3 \(6.4756\;m{s^{ - 1}}\)
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360798 The rate of flow of glycerine of density \(1.25 \times {10^3}\;kg/{m^3}\) through the conical section of a pipe, if the radii of its ends are \(0.1\;m\) and \(0.04\;m\) and the pressure drop across its length is \(10\;N/{m^2}\) is

1 \(5.28 \times {10^{ - 4}}\;{m^3}/s\)
2 \(6.28 \times {10^{ - 4}}\;{m^3}/s\)
3 \(7.28 \times {10^{ - 4}}\;{m^3}/s\)
4 \(8.28 \times {10^{ - 4}}\;{m^3}/s\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360799 Two light balls are suspended as shown in figure. When a stream of air passes through the space between them, the distance between the balls will
supporting img

1 remain same
2 increase
3 may increase or decrease, depending on speed of air
4 decrease
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360800 At what speed, the velocity head of the water is twice the pressure head of \(75\;cm\) of \(Hg\) ?

1 \(10\;m{\rm{/}}s\)
2 \(20\;m{\rm{/}}s\)
3 \(30\;m{\rm{/}}s\)
4 \(40\;m{\rm{/}}s\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360796 Water flows along a horizontal pipe whose cross-section is not constant. The pressure is \(1\;cm\) of \(H g\) where the velocity is \(35\;cm\;{s^{ - 1}}\). At a point where the velocity is \(65\;cm\;{s^{ - 1}}\), the pressure will be

1 \(0.89\;cm\) of \(Hg\)
2 \(8.9\;cm\) of \(Hg\)
3 \(0.5\;cm\) of \(Hg\)
4 \(1\;cm\) of \(Hg\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360797 At what speed will the velocity of a stream of water be equal to \(20\;cm\) of mercury column ? (Take, \(g = 10\;m{s^{ - 2}}\) )

1 \(6.4\;m{s^{ - 1}}\)
2 \(7.3756\;\,m{s^{ - 1}}\)
3 \(6.4756\;m{s^{ - 1}}\)
4 None of these
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360798 The rate of flow of glycerine of density \(1.25 \times {10^3}\;kg/{m^3}\) through the conical section of a pipe, if the radii of its ends are \(0.1\;m\) and \(0.04\;m\) and the pressure drop across its length is \(10\;N/{m^2}\) is

1 \(5.28 \times {10^{ - 4}}\;{m^3}/s\)
2 \(6.28 \times {10^{ - 4}}\;{m^3}/s\)
3 \(7.28 \times {10^{ - 4}}\;{m^3}/s\)
4 \(8.28 \times {10^{ - 4}}\;{m^3}/s\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360799 Two light balls are suspended as shown in figure. When a stream of air passes through the space between them, the distance between the balls will
supporting img

1 remain same
2 increase
3 may increase or decrease, depending on speed of air
4 decrease
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

360800 At what speed, the velocity head of the water is twice the pressure head of \(75\;cm\) of \(Hg\) ?

1 \(10\;m{\rm{/}}s\)
2 \(20\;m{\rm{/}}s\)
3 \(30\;m{\rm{/}}s\)
4 \(40\;m{\rm{/}}s\)