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applied fluid mechanics

Questions and Answers of Applied Fluid Mechanics

Calculate the weight of a body in lb if it has a kinetic energy of 38.6 ft-lb when moving at 19.5 mi/h.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the mass of a body in slugs if it has a kinetic energy of 15 ft-lb when moving at 2.2 ft/s.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the kinetic energy in ft-lb of a 150-lb box moving on a conveyor at 20 ft/s.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the kinetic energy in ft-lb of an 8000-lb truck moving at 10 mi/h.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the kinetic energy in ft-lb of a 1-slug mass if it has a velocity of 4 ft/s.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the velocity in m/s of a 175-g body if it has a kinetic energy of 212 m N∙m.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the velocity in m/s of a 12-kg object if it has a kinetic energy of 15 N∙m.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the mass of a body in g if it has a kinetic energy of 94.6 m N∙m when moving at 2.25 m/s.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the mass of a body in kg if it has a kinetic energy of 38.6 N∙m when moving at 31.5 km/h.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the kinetic energy in N∙m of a 75-kg box moving on a conveyor at 6.85 m/s.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the kinetic energy in N∙m of a 3600-kg truck moving at 16 km/h.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
Calculate the kinetic energy in N∙m of a 15-kg mass if it has a velocity of 1.20 m/s.The formula for kinetic energy is KE = ½ mv2, where m = mass and v = velocity.
An object is dropped from a height of 53 in. Neglecting air resistance, how long would it take for the body to strike the ground? Use a = g = 32.2 ft/s2.A body starting from rest with constant
If a body moves 3.2 km in 4.7 min with constant acceleration, calculate the acceleration in ft/s2.A body starting from rest with constant acceleration moves according to the relationship s = ½ at2,
An object is dropped from a height of 13 m. Neglecting air resistance, how long would it take for the body to strike the ground? Use a = g = 9.81 m/s2.A body starting from rest with constant
If a body moves 3.2 km in 4.7 min with constant acceleration, calculate the acceleration in m/s2.A body starting from rest with constant acceleration moves according to the relationship s = ½ at2,
In an attempt at a land speed record, a car travels 1 mi in 5.7 s. Calculate its average speed in mi/h.A body moving with constant velocity obeys the relationship s = vt, where s = distance, v =
A car travels 1000 ft in 14 s. Calculate its average speed in mi/h.A body moving with constant velocity obeys the relationship s = vt, where s = distance, v = velocity, and t = time.
In an attempt at a land speed record, a car travels 1.50 km in 5.2 s. Calculate its average speed in km/h.A body moving with constant velocity obeys the relationship s = vt, where s = distance, v =
A car travels 0.50 km in 10.6 s. Calculate its average speed in m/s.A body moving with constant velocity obeys the relationship s = vt, where s = distance, v = velocity, and t = time.
Convert 2500 cubic feet per minute to cubic meters per second.
An automobile is moving at 80 kilometers per hour. Calculate its speed in meters per second.
Convert 1600 square millimeters to square meters.
Convert all of the kinematic viscosity data in Table 2.5 for ISO viscosity grades from mm2/s (cSt) to SUS. Kinematic Viscosity at 40°C (cSt) or (mm2/s) Grade IS VG Nominal Minimum Maximum 2.2 1.98
An oil is tested using a Saybolt viscometer and its viscosity is 526 SUS at 40°C. Determine the kinematic viscosity of the oil in mm2/s at that temperature.
An oil is tested using a Saybolt viscometer and its viscosity is 4690 SUS at 80°C. Determine the kinematic viscosity of the oil in mm2/s at that temperature.
An oil is tested using a Saybolt viscometer and its viscosity is 176 SUS at 100°F. Determine the kinematic viscosity of the oil in mm2/s at that temperature.
An oil is tested using a Saybolt viscometer and its viscosity is 68 SUS at 100°F. Determine the kinematic viscosity of the oil in mm2/s at that temperature.
An oil is tested using a Saybolt viscometer and its viscosity is 438 SUS at 100°F. Determine the kinematic viscosity of the oil in mm2/s at that temperature.
An oil is tested using a Saybolt viscometer and its viscosity is 6250 SUS at 100°F. Determine the kinematic viscosity of the oil in mm2/s at that temperature.
A fluid has a kinematic viscosity of 205 mm2/s at 190°F. Determine its equivalent viscosity in SUS at that temperature.
A fluid has a kinematic viscosity of 153 mm2/s at 40°F. Determine its equivalent viscosity in SUS at that temperature.
A fluid has a kinematic viscosity of 244 mm2/s at 100°F. Determine its equivalent viscosity in SUS at that temperature.
A fluid has a kinematic viscosity of 188 mm2/s at 100°F. Determine its equivalent viscosity in SUS at that temperature.
A fluid has a kinematic viscosity of 55.3 mm2/s at 100°F. Determine its equivalent viscosity in SUS at that temperature.
A fluid has a kinematic viscosity of 15.0 mm2/s at 100°F. Determine its equivalent viscosity in SUS at that temperature.
A capillary type viscometer similar to that shown in Fig. 2.7 is being used to measure the viscosity of an oil having a specific gravity of 0.90. The following data apply:Tube inside diameter = 0.100
In a falling-ball viscometer, a steel ball with a diameter of 0.063 in is allowed to fall freely in a heavy fuel oil having a specific gravity of 0.94. Steel weighs 0.283 lb/in3. If the ball is
A capillary tube viscometer similar to that shown in Fig. 2.7 is being used to measure the viscosity of an oil having a specific gravity of 0.90. The following data apply:Tube inside diameter = 2.5
In a falling-ball viscometer, a steel ball 1.6 mm in diameter is allowed to fall freely in a heavy fuel oil having a specific gravity of 0.94. Steel weighs 77 kN/m3. If the ball is observed to fall
An oil container indicates that it has a viscosity of 0.12 poise at 60°C. Which oil in Appendix D has a similar viscosity?
Convert a viscosity measurement of 6.5 × 10-3 Pa∙s into the units of lb∙s/ft2.
The viscosity of an oil is given as 80 SUS at 100°F. Determine the viscosity in m2 /s.
Convert a kinematic viscosity measurement of 5.6 cSt into m2/s and ft2/s.
Convert a dynamic viscosity measurement of 4500 cP into Pa∙s and lb∙s/ft2.
The viscosity of a lubricating oil is given as 500 SUS at 100°F. Calculate the viscosity in m2 /s and ft2 /s.
How would you determine the viscosity of an oil labeled SAE 5W-40 for comparison with SAE standards?
If you were asked to check the viscosity of an oil that is described as SAE 10W, at what temperatures would you make the measurements?
What grades of SAE oil are suitable for lubricating geartype transmissions?
What grades of SAE oil are suitable for lubricating the crankcases of engines?
Describe the difference between an SAE 20 oil and an SAE 20W oil.
Which type of viscometer is prescribed by SAE for measurements of viscosity of oils at 100°C?
Does the Saybolt viscometer produce data related to a fluid’s dynamic viscosity or kinematic viscosity?
Are the results of the Saybolt viscometer tests considered to be direct measurements of viscosity?
Describe the basic features of the Saybolt Universal viscometer.
What measurements must be taken to determine dynamic viscosity when using the falling-ball viscometer?
Define the term terminal velocity as it applies to a fallingball viscometer.
What measurements must be taken to determine dynamic viscosity when using a capillary tube viscometer?
In the rotating-drum viscometer, describe how the magnitude of the shear stress is measured.
In the rotating-drum viscometer, describe how the velocity gradient is created in the fluid to be measured.
Which type of viscosity measurement method uses the basic In the rotating-drum viscometer, describe how the velocity gradient is created in the fluid to be measured.definition of dynamic viscosity
If you want to choose a fluid that exhibits a small change in viscosity as the temperature changes, would you choose one with a high VI or a low VI?
Define viscosity index (VI).Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
SAE 30 oil at 210°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
SAE 30 oil at 60°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
SAE 10 oil at 210°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
SAE 10 oil at 60°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Mercury at 210°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Mercury at 60°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Glycerin at 110°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Glycerin at 60°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Hydrogen at 40°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Air at 40°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Water at 150°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Water at 40°F.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Glycerin at 20°C.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Glycerin at 40°C.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Hydrogen at 40°C.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Air at 40°C.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Water at 5°C.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Water at 40°C.Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids
Give four examples of the types of fluids that are non-Newtonian.
Give five examples of Newtonian fluids.
Define a non-Newtonian fluid.
Define a Newtonian fluid.
Why are the units of stoke and centistoke considered obsolete?
State the equivalent units for stoke in terms of the basic quantities in the cgs system.
State the standard units for kinematic viscosity in the U.S. Customary System.
State the standard units for kinematic viscosity in the SI system.
State the mathematical definition for kinematic viscosity.
Why are the units of poise and centipoise considered obsolete?
State the equivalent units for poise in terms of the basic quantities in the cgs system.
State the standard units for dynamic viscosity in the U.S. Customary System.
Which would have the greater dynamic viscosity, a cold lubricating oil or fresh water? Why?
State the mathematical definition for dynamic viscosity.
Define velocity gradient.
Define shear stress as it applies to a moving fluid.
How many gallons of mercury (sg = 13.54) would weigh the same as 5 gal of castor oil, which has a specific weight of 59.69 lb/ft3?
A storage vessel for gasoline (sg = 0.68) is a vertical cylinder 30 ft in diameter. If it is filled to a depth of 22 ft, calculate the number of gallons in the tank and the weight of the gasoline.
A cylindrical container has a 6.0-in diameter and weighs 0.50 lb when empty. When filled to a depth of 8.0 in with a certain oil, it weighs 7.95 lb. Calculate the specific gravity of the oil.

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