Appendix D: Fluid Viscosity Quiz

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Express a pressure of 155 kPa (gage) as an absolute pressure. The local atmospheric pressure is 98 kPa(abs).

253 kPa

Express a pressure of 225 kPa(abs) as a gage pressure. The local atmospheric pressure is 101 kPa(abs).

124 kPa

Express an absolute pressure of 75.2 kPa as a gage pressure. The local atmospheric pressure is 103.4 kPa.

-28.2 kPa

Define pressure in terms of force and unit area.

Pressure is the amount of force exerted on a unit area of a substance. Signup and view all the answers

What is the conversion factor between bar and kilopascal (kPa)?

1 bar = 100 kPa Signup and view all the answers

According to Pascal's Laws, how does pressure act on a small volume of fluid?

Pressure acts uniformly in all directions on a small volume of a fluid. Signup and view all the answers

In a fluid confined by solid boundaries, in which direction does pressure act?

Pressure acts perpendicular to the boundary. Signup and view all the answers

What is the formula to calculate pressure in a fluid?

Pressure (p) = Force (F) / Area (A) Signup and view all the answers

What is the required pressure in the oil if a hydraulic cylinder must exert a force of 38.8 kN with a piston diameter of 40 mm?

Required pressure = Force / Area = 38.8 kN / (π * (40 mm / 2)^2) Signup and view all the answers

What is the required pressure in the oil when the force exerted is 38.8 kN and the piston diameter is 40 mm?

Required pressure = 38.8 kN / (π * (40 mm / 2)^2) Signup and view all the answers

What is the viscosity of water at 40°C?

6.5 imes 10^{-4} Ns/m^2 Signup and view all the answers

What is the viscosity of water at 5°C?

1.5 imes 10^{-3} Ns/m^2 Signup and view all the answers

What is the viscosity of glycerine at 20°C?

1.9 Ns/m^2 Signup and view all the answers

What is the viscosity of water at 150°F?

9.8 imes 10^{-2} lbs/ft s Signup and view all the answers

What is the viscosity of glycerine at 110°F?

4.1 imes 10^{2} Ns/m^2 Signup and view all the answers

What is the reference pressure when making calculations involving pressure in a fluid?

Atmospheric pressure Signup and view all the answers

What is the resulting measured pressure called when the reference pressure is that of the atmosphere?

Gage pressure Signup and view all the answers

What is the volume of the reservoir in the second problem?

0.917 m3 Signup and view all the answers

Compute the density of the oil in the second problem.

900 kg/m3 Signup and view all the answers

Calculate the specific gravity of the oil in the second problem.

0.900 Signup and view all the answers

What is the specific gravity of benzene?

0.876 Signup and view all the answers

What is the density of benzene in SI units?

876 kg/m3 Signup and view all the answers

What does 'Dynamic (absolute) Viscosity' represent?

Dynamic (absolute) Viscosity represents the viscosity of a fluid. Signup and view all the answers

What is the fundamental condition that exists when a real fluid is in contact with a boundary surface?

The fundamental condition is that the fluid has the same velocity as the boundary surface. Signup and view all the answers

1 bar is equal to ______ kPa

100 Signup and view all the answers

Pressure is the amount of force exerted on a unit ______ of a substance

area Signup and view all the answers

Pressure acts uniformly in all ______ on a small volume of a fluid

directions Signup and view all the answers

In a fluid confined by solid boundaries, pressure acts ______ to the boundary

perpendicular Signup and view all the answers

A hydraulic cylinder must be able to exert a force of 38.8 kN. The piston diameter is 40 mm. Compute the required pressure in the ______

oil Signup and view all the answers

Pascal's Laws state that pressure acts uniformly in all directions on a small ______ of a fluid

volume Signup and view all the answers

The existing conversion factor between bar and kilopascal (kPa) is 1 bar = ______ kPa

100 Signup and view all the answers

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 1) (2.18M) Water at 40°C

6.5 Signup and view all the answers

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 2) (2.19M) Water at 5°C

1.5 Signup and view all the answers

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 3) (2.23M) Glycerine at at 20°C

1.9 Signup and view all the answers

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 4) (2.25E) Water at 150°F

9.8 Signup and view all the answers

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 5) (2.29E) Glycerine at 110°F

4.1 Signup and view all the answers

When making calculations involving pressure in a fluid, you must make the measurements relative to some reference pressure.Normally the reference pressure is that of the atmosphere, and the resulting measured pressure is called ◼ pressure.

gage Signup and view all the answers

Pressure in a fluid is measured relative to some reference pressure, which is typically that of the atmosphere. The resulting measured pressure is called ◼ pressure.

gage Signup and view all the answers

Pressure measured relative to a perfect vacuum is called ______ pressure

absolute Signup and view all the answers

Pabs = pgage + ______ where pabs = Absolute pressure= pressure measured relative to a perfect vacuum

patm Signup and view all the answers

Express a pressure of 155 kPa (gage) as an ______ pressure. The local atmospheric pressure is 98 kPa(abs)

absolute Signup and view all the answers

Express a pressure of 225 kPa(abs) as a ______ pressure. The local atmospheric pressure is 101 kPa(abs)

gage Signup and view all the answers

Express an absolute pressure of 75.2 kPa as a ______ pressure. The local atmospheric pressure is 103.4 kPa

gage Signup and view all the answers

Notice that the result is ______

negative Signup and view all the answers

The indication of gage or absolute is for convenience and ______

clarity Signup and view all the answers

Using Fig. 3.12, calculate the pressure between points A and B: ◼ 1/31/2022 Cristina Toma 26 Pressure: Types and measurement Objective 3 ◼ Manometers Well-Type Manometer ◼ When a pressure is applied to a welltype manometer, the fluid level in the well drops a small amount while the level in the right leg rises a larger amount in proportion to the ratio of the areas of the well and the tube.A scale is placed alongside the tube so that the deflection can be read directly.The scale is calibrated to account for the small drop in the well level. 1/31/2022 Cristina Toma 27 Pressure: Types and measurement Objective 3 ◼ Manometers Inclined well-type manometer.◼ It has the same features as the well-type manometer but offers a greater sensitivity by placing the scale along the inclined tube.The scale length is increased as a function of the angle of inclination of the tube,θ.where L is the scale length and h is the manometer deflection 1/31/2022 Cristina Toma 28 Pressure: Types and measurement Objective 3 ◼ Pressure gages, Pressure Transducers For those situations where only a visual indication is needed at the site where the pressure is being measured, a pressure gage is used.

Differential Signup and view all the answers

For those situations where only a visual indication is needed at the site where the pressure is being measured, a pressure ______ is used.

gage Signup and view all the answers

The fluid level in the well drops a small amount while the level in the right leg rises a larger amount in proportion to the ratio of the areas of the well and the tube.

welltype Signup and view all the answers

It has the same features as the well-type manometer but offers a greater sensitivity by placing the scale along the ______ tube.

inclined Signup and view all the answers

It has the same features as the well-type manometer but offers a greater sensitivity by placing the along the inclined tube.The length is increased as a function of the angle of inclination of the tube,θ.where L is the __ length and h is the manometer deflection

scale Signup and view all the answers

A scale is placed alongside the ______ so that the deflection can be read directly.The scale is calibrated to account for the small drop in the well level.

tube Signup and view all the answers

When a pressure is applied to a welltype ______, the fluid level in the well drops a small amount while the level in the right leg rises a larger amount in proportion to the ratio of the areas of the well and the tube.

manometer Signup and view all the answers

For those situations where only a visual indication is needed at the site where the pressure is being measured, a pressure gage is used.

Pressure Signup and view all the answers

Calculate the pressure between points A and B: ◼ 1/31/2022 Cristina Toma 26 Pressure: and measurement Objective 3 ◼ Manometers Well-Type Manometer ◼ When a pressure is applied to a welltype manometer, the fluid level in the well drops a small amount while the level in the right leg rises a larger amount in proportion to the ratio of the areas of the well and the tube.A scale is placed alongside the tube so that the deflection can be read directly.The scale is calibrated to account for the small drop in the well level. 1/31/2022 Cristina Toma 27 Pressure: and measurement Objective 3 ◼ Manometers Inclined well-type manometer.◼ It has the same features as the well-type manometer but offers a greater sensitivity by placing the scale along the inclined tube.The scale length is increased as a function of the angle of inclination of the tube,θ.where L is the scale length and h is the manometer deflection 1/31/2022 Cristina Toma 28 Pressure: __ and measurement Objective 3 ◼ Pressure gages, Pressure Transducers

Types Signup and view all the answers

Appendix D: Fluid Viscosity Quiz

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Questions and Answers

Express a pressure of 155 kPa (gage) as an absolute pressure. The local atmospheric pressure is 98 kPa(abs).

Express a pressure of 225 kPa(abs) as a gage pressure. The local atmospheric pressure is 101 kPa(abs).

Express an absolute pressure of 75.2 kPa as a gage pressure. The local atmospheric pressure is 103.4 kPa.

Define pressure in terms of force and unit area.

What is the conversion factor between bar and kilopascal (kPa)?

According to Pascal's Laws, how does pressure act on a small volume of fluid?

In a fluid confined by solid boundaries, in which direction does pressure act?

What is the formula to calculate pressure in a fluid?

What is the required pressure in the oil if a hydraulic cylinder must exert a force of 38.8 kN with a piston diameter of 40 mm?

What is the required pressure in the oil when the force exerted is 38.8 kN and the piston diameter is 40 mm?

What is the viscosity of water at 40°C?

What is the viscosity of water at 5°C?

What is the viscosity of glycerine at 20°C?

What is the viscosity of water at 150°F?

What is the viscosity of glycerine at 110°F?

What is the reference pressure when making calculations involving pressure in a fluid?

What is the resulting measured pressure called when the reference pressure is that of the atmosphere?

What is the volume of the reservoir in the second problem?

Compute the density of the oil in the second problem.

Calculate the specific gravity of the oil in the second problem.

What is the specific gravity of benzene?

What is the density of benzene in SI units?

What does 'Dynamic (absolute) Viscosity' represent?

What is the fundamental condition that exists when a real fluid is in contact with a boundary surface?

1 bar is equal to ______ kPa

Pressure is the amount of force exerted on a unit ______ of a substance

Pressure acts uniformly in all ______ on a small volume of a fluid

In a fluid confined by solid boundaries, pressure acts ______ to the boundary

A hydraulic cylinder must be able to exert a force of 38.8 kN. The piston diameter is 40 mm. Compute the required pressure in the ______

Pascal's Laws state that pressure acts uniformly in all directions on a small ______ of a fluid

The existing conversion factor between bar and kilopascal (kPa) is 1 bar = ______ kPa

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 1) (2.18M) Water at 40°C

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 2) (2.19M) Water at 5°C

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 3) (2.23M) Glycerine at at 20°C

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 4) (2.25E) Water at 150°F

Using Appendix D, give the value of the viscosity for the following fluids: ◼ 5) (2.29E) Glycerine at 110°F

When making calculations involving pressure in a fluid, you must make the measurements relative to some reference pressure.Normally the reference pressure is that of the atmosphere, and the resulting measured pressure is called ◼ pressure.

Pressure in a fluid is measured relative to some reference pressure, which is typically that of the atmosphere. The resulting measured pressure is called ◼ pressure.

Pressure measured relative to a perfect vacuum is called ______ pressure

Pabs = pgage + ______ where pabs = Absolute pressure= pressure measured relative to a perfect vacuum

Express a pressure of 155 kPa (gage) as an ______ pressure. The local atmospheric pressure is 98 kPa(abs)

Express a pressure of 225 kPa(abs) as a ______ pressure. The local atmospheric pressure is 101 kPa(abs)

Express an absolute pressure of 75.2 kPa as a ______ pressure. The local atmospheric pressure is 103.4 kPa

Notice that the result is ______

The indication of gage or absolute is for convenience and ______

For those situations where only a visual indication is needed at the site where the pressure is being measured, a pressure ______ is used.

The fluid level in the well drops a small amount while the level in the right leg rises a larger amount in proportion to the ratio of the areas of the well and the tube.

It has the same features as the well-type manometer but offers a greater sensitivity by placing the scale along the ______ tube.

It has the same features as the well-type manometer but offers a greater sensitivity by placing the ______ along the inclined tube.The ______ length is increased as a function of the angle of inclination of the tube,θ.where L is the ______ length and h is the manometer deflection

A scale is placed alongside the ______ so that the deflection can be read directly.The scale is calibrated to account for the small drop in the well level.

When a pressure is applied to a welltype ______, the fluid level in the well drops a small amount while the level in the right leg rises a larger amount in proportion to the ratio of the areas of the well and the tube.

For those situations where only a visual indication is needed at the site where the pressure is being measured, a pressure gage is used.

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It has the same features as the well-type manometer but offers a greater sensitivity by placing the along the inclined tube.The length is increased as a function of the angle of inclination of the tube,θ.where L is the __ length and h is the manometer deflection