Podcast
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 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).
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.
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.
Define pressure in terms of force and unit area.
Signup and view all the answers
What is the conversion factor between bar and kilopascal (kPa)?
What is the conversion factor between bar and kilopascal (kPa)?
Signup and view all the answers
According to Pascal's Laws, how does pressure act on a small volume of fluid?
According to Pascal's Laws, how does pressure act on a small volume of fluid?
Signup and view all the answers
In a fluid confined by solid boundaries, in which direction does pressure act?
In a fluid confined by solid boundaries, in which direction does pressure act?
Signup and view all the answers
What is the formula to calculate pressure in a fluid?
What is the formula to calculate pressure in a fluid?
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?
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?
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?
What is the required pressure in the oil when the force exerted is 38.8 kN and the piston diameter is 40 mm?
Signup and view all the answers
What is the viscosity of water at 40°C?
What is the viscosity of water at 40°C?
Signup and view all the answers
What is the viscosity of water at 5°C?
What is the viscosity of water at 5°C?
Signup and view all the answers
What is the viscosity of glycerine at 20°C?
What is the viscosity of glycerine at 20°C?
Signup and view all the answers
What is the viscosity of water at 150°F?
What is the viscosity of water at 150°F?
Signup and view all the answers
What is the viscosity of glycerine at 110°F?
What is the viscosity of glycerine at 110°F?
Signup and view all the answers
What is the reference pressure when making calculations involving pressure in a fluid?
What is the reference pressure when making calculations involving pressure in a fluid?
Signup and view all the answers
What is the resulting measured pressure called when the reference pressure is that of the atmosphere?
What is the resulting measured pressure called when the reference pressure is that of the atmosphere?
Signup and view all the answers
What is the volume of the reservoir in the second problem?
What is the volume of the reservoir in the second problem?
Signup and view all the answers
Compute the density of the oil in the second problem.
Compute the density of the oil in the second problem.
Signup and view all the answers
Calculate the specific gravity of the oil in the second problem.
Calculate the specific gravity of the oil in the second problem.
Signup and view all the answers
What is the specific gravity of benzene?
What is the specific gravity of benzene?
Signup and view all the answers
What is the density of benzene in SI units?
What is the density of benzene in SI units?
Signup and view all the answers
What does 'Dynamic (absolute) Viscosity' represent?
What does 'Dynamic (absolute) Viscosity' represent?
Signup and view all the answers
What is the fundamental condition that exists when a real fluid is in contact with a boundary surface?
What is the fundamental condition that exists when a real fluid is in contact with a boundary surface?
Signup and view all the answers
1 bar is equal to ______ kPa
1 bar is equal to ______ kPa
Signup and view all the answers
Pressure is the amount of force exerted on a unit ______ of a substance
Pressure is the amount of force exerted on a unit ______ of a substance
Signup and view all the answers
Pressure acts uniformly in all ______ on a small volume of a fluid
Pressure acts uniformly in all ______ on a small volume of a fluid
Signup and view all the answers
In a fluid confined by solid boundaries, pressure acts ______ to the boundary
In a fluid confined by solid boundaries, pressure acts ______ to the boundary
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 ______
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 ______
Signup and view all the answers
Pascal's Laws state that pressure acts uniformly in all directions on a small ______ of a fluid
Pascal's Laws state that pressure acts uniformly in all directions on a small ______ of a fluid
Signup and view all the answers
The existing conversion factor between bar and kilopascal (kPa) is 1 bar = ______ kPa
The existing conversion factor between bar and kilopascal (kPa) is 1 bar = ______ kPa
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
Using Appendix D, give the value of the viscosity for the following fluids: ◼ 1) (2.18M) Water at 40°C
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
Using Appendix D, give the value of the viscosity for the following fluids: ◼ 2) (2.19M) Water at 5°C
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
Using Appendix D, give the value of the viscosity for the following fluids: ◼ 3) (2.23M) Glycerine at at 20°C
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
Using Appendix D, give the value of the viscosity for the following fluids: ◼ 4) (2.25E) Water at 150°F
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
Using Appendix D, give the value of the viscosity for the following fluids: ◼ 5) (2.29E) Glycerine at 110°F
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.
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.
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.
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.
Signup and view all the answers
Pressure measured relative to a perfect vacuum is called ______ pressure
Pressure measured relative to a perfect vacuum is called ______ pressure
Signup and view all the answers
Pabs = pgage + ______ where pabs = Absolute pressure= pressure measured relative to a perfect vacuum
Pabs = pgage + ______ where pabs = Absolute pressure= pressure measured relative to a perfect vacuum
Signup and view all the answers
Express a pressure of 155 kPa (gage) as an ______ pressure. The local atmospheric pressure is 98 kPa(abs)
Express a pressure of 155 kPa (gage) as an ______ pressure. The local atmospheric pressure is 98 kPa(abs)
Signup and view all the answers
Express a pressure of 225 kPa(abs) as a ______ pressure. The local atmospheric pressure is 101 kPa(abs)
Express a pressure of 225 kPa(abs) as a ______ pressure. The local atmospheric pressure is 101 kPa(abs)
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
Express an absolute pressure of 75.2 kPa as a ______ pressure. The local atmospheric pressure is 103.4 kPa
Signup and view all the answers
Notice that the result is ______
Notice that the result is ______
Signup and view all the answers
The indication of gage or absolute is for convenience and ______
The indication of gage or absolute is for convenience and ______
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.
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.
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.
For those situations where only a visual indication is needed at the site where the pressure is being measured, a pressure ______ is used.
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.
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.
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.
It has the same features as the well-type manometer but offers a greater sensitivity by placing the scale along the ______ tube.
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
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
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.
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.
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.
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.
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.
For those situations where only a visual indication is needed at the site where the pressure is being measured, a pressure gage is used.
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
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
Signup and view all the answers
