Applied Fluid Mechanics
7th Edition
ISBN: 9780133414622
Author: UNTENER
Publisher: YUZU
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 1, Problem 1.16PP
Convert
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
20-4-2025
Exam-2-Tribology
Q1: What are the assumptions of hydrodynamic lubrication theory:
Q2: Explain with sketch the cycle or process of engine lubrication system-pressurized
lubrication system
Q3: A short bearing is designed to operate with an eccentricity ratio = 0. 7. The journal
diameter is 60 mm, and its speed is 1300 r.p.m. The journal is supported by a short
hydrodynamic bearing of length L/D = 0. 5, and clearance ratio C/R = 103. The radial load
on the bearing is 9800 N.
a. Find the Sommerfeld number.
b. Find the minimum viscosity of the lubricant for operating at ε = 0.7
c. Select a lubricant if the average bearing operating temperature is 70°c
Q4: Two parallel circular disks of 100 mm diameter have a clearance of Imm between them.
Under load, the downward velocity of the upper disk is 2 m/s. At the same time, the lower disk
is stationary. The clearance is full of SAE 40 oil at a temperature of 60°c.
a. Find the load on the upper disk that results in the instantaneous…
Tribobolgy
15/2022
Monthly Exam.
Automobile Eng. Dert
2nd Semster/3rd class
Max. Mark: 100%
7. Viscosity of multi-grade oils
(a) Reduces with temperature
(c) is less sensitive to temperature
(b) Increases with temperature
(d) None of the above
8. In a hydrodynamic journal bearing if eccentricity ratio = 1, it means
(a) Journal/shaft is subjected to no load and the rotational speed is very high.
(b) Journal is subjected to no load and the rotational speed is moderate
(c) Journal is subjected to very light load and the rotational speed is very high.
(d) Journal is subjected to very high load and the rotational speed is negligible.
Q4/ The journal speed of a 100mm diameter journal is 2500 rpm. The journal is supported by
a short hydrodynamic bearing of length L=0.6D, eccentricity ratio = 0.75 and a clearance
ratio C/R=0.001. The radial load on the bearing is 10 kN. The lubricant is SAE 30, and the
operating temperature of the lubricant in the bearing is 700C.
1- Assume…
1 of 2
Monthly Exam.
Automobile Eng. Dert
2nd Semster/3rd class
Max. Mark: 100%
Q1/A/ Compare between the long and short journal bearings
B/ With the help of Stribeck's curve, discuss different regimes of lubrication.
C/ Explain the importance of Tribology in the design of different machine elements
Q2 /A/ According to the SAE viscosity grading system all engine oils are divided into two
classes: monograde and multi-grade. Compare between them?
B/What are the differences between grease and Synthetic oils
C/ Explain the effect of eccentricity ratio & with respect to hydrodynamic journal bearing.
Q3/A/ What are the major factors which affect the selection of lubricants?
B/What are the criteria to classify sliding bearings?
C/ Answer of the following:
1. According to the SAE viscosity classification, the oil (SAE 40) is lower viscosity than the
oil (SAE 20) at the same temperature. (True or False)
2. For a slow speed-highly loaded bearing, used oils of high viscosity; while for high-speed…
Chapter 1 Solutions
Applied Fluid Mechanics
Ch. 1 - 1.1 Convert 1250 millimeters to meters.Ch. 1 - Convert 1600 square millimeters to square metersCh. 1 - Convert 3.65x103 cubic millimeters to cubic metersCh. 1 - Convert 2.05 square meters to square millimetersCh. 1 - Convert 0.391 cubic meters to cubic millimetersCh. 1 - Convert 55.0 gallons to cubic metersCh. 1 - An automobile is moving at 80 kilometers per hour,...Ch. 1 - Convert a length of 25.3 feet to metersCh. 1 - Convert a distance of 1.36 miles to meters.Ch. 1 - Convert a length of 3.65 inches to millimeters.
Ch. 1 - Convert a distance of 2580 feet to meters.Ch. 1 - Convert a volume of 480 cubic feet to cubic...Ch. 1 - Convert a volume of 7390 cubic centimeters to...Ch. 1 - Convert a volume of 6.35 liters to cubic nneters.Ch. 1 - Convert 6.0 feet per second to meters per secondCh. 1 - Convert 2500 cubic feet per minute to cubic meters...Ch. 1 - A car travels 0.50 km in 10.6 s. Calculate its...Ch. 1 - In an attempt at a land speed record, a car...Ch. 1 - A car travels 1000 ft in 14 s. Calculate its...Ch. 1 - In an attempt at a land speed record, a car...Ch. 1 - A body starting from rest with constant...Ch. 1 - A body starting from rest with constant...Ch. 1 - A body starting from rest with constant...Ch. 1 - A body starting from rest with constant...Ch. 1 - The formula for kinetic energy is KE=mv2, where m...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is KE=12mv2 where m...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is where m = mass...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - The formula for kinetic energy is KE=12mv2, where...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - One measure of a baseball pitcher's performance is...Ch. 1 - Compute the pressure change required to cause a...Ch. 1 - Compute the pressure change required to cause a...Ch. 1 - Compute the pressure change required to cause a...Ch. 1 - For the conditions described in Problem 1.59...Ch. 1 - A certain hydraulic system operates at 3000 psi....Ch. 1 - A certain hydraulic system operates at 20.0 MPa....Ch. 1 - A measure of the stiffness of a linear actuator...Ch. 1 - 1.64 Repeat Problem 1.63 but change the length of...Ch. 1 - Repeat Problem 1.6319 but change the cylinder...Ch. 1 - Using the results of Problems 1.63-1.65, generate...Ch. 1 - Calculate the mass of a can of oil if it weighs...Ch. 1 - Calculate the mass of a tank of gasoline if it...Ch. 1 - '1.69 Calculate the weight of 1m3 of kerosene if...Ch. 1 - Calculate the weight of a jar of castor oil if it...Ch. 1 - Calculate the mass of 1 gal of oil if it weighs...Ch. 1 - Calculate the mass of 1ft3 of gasoline if it...Ch. 1 - Calculate the weight of 1ft3 of kerosene if it has...Ch. 1 - Calculate the weight of 1 gal of water if it has a...Ch. 1 - Assume that a man weighs 160 lb (force) Compute...Ch. 1 - In the United States, hamburger and other meats...Ch. 1 - The metric ton is 1000 kg (mass). Compute the...Ch. 1 - Convert the force found in Problem 1.77 to lb.Ch. 1 - Determine your weight in lb and N and your mass in...Ch. 1 - The specific gravity of benzene is 0.876....Ch. 1 - Air at 16 C and standard atmospheric pressure has...Ch. 1 - Carbon dioxide has a density of 1.964kg/m3 at 0 C....Ch. 1 - A certain medium lubricating oil has a specific...Ch. 1 - At 100 C mercury has a specific weight of...Ch. 1 - A cylindrical can 150 mm in diameter is filled to...Ch. 1 - Glycerin has a specific gravity of 1.258. How much...Ch. 1 - The fuel tank of an automobile holds 0.095m3. If...Ch. 1 - The density of muriatic acid is 1200 kg / m3...Ch. 1 - Liquid ammonia has a specific gravity of 0.826....Ch. 1 - Vinegar has a density of 1080 kg / m3 Calculate...Ch. 1 - Methyl alcohol has a specific gravity of 0.789....Ch. 1 - A cylindrical container is 150 mm in diameter and...Ch. 1 - A storage vessel for gasoline ( sg=0.68 ) is a...Ch. 1 - What volume of mercury (sg = 13.54) would weigh...Ch. 1 - A rock has a specific gravity of 2.32 and a volume...Ch. 1 - The specific gravity of benzene is 0.876....Ch. 1 - Air at 59 F and standard atmospheric pressure has...Ch. 1 - Carbon dioxide has a density of 0.003 81 slug/ft3...Ch. 1 - A certain medium lubricating oil has a specific...Ch. 1 - At 212F mercury has a specific weight of 834...Ch. 1 - One gallon of a certain fuel oil weighs 7.50 lb....Ch. 1 - Glycerin has a specific gravity of 1.258. How much...Ch. 1 - The fuel tank of an automobile holds 25.0 gal. If...Ch. 1 - The density of muriatic acid is 1.20 g/cm3....Ch. 1 - Liquid ammonia has a specific gravity of 0.826....Ch. 1 - Vinegar has a density of 1.08 g/cm3. Calculate its...Ch. 1 - Alcohol has a specific gravity of 0.79. Calculate...Ch. 1 - A cylindrical container has a 6.0-in diameter and...Ch. 1 - A storage vessel for gasoline (sg = 0.68) is a...Ch. 1 - How many gallons of mercury (sg = 13.54) would...Ch. 1 - A rock has a specific gravity of 2.32 and a volume...Ch. 1 - A village of 75 people desires a tank to store a...Ch. 1 - A cylindrical tank has a diameter of 38 in with...Ch. 1 - What is the required rate, in N/min, to empty a...Ch. 1 - An empty tank measuring 1.5 m by 2.5 m on the...Ch. 1 - A tank that is 2 ft in diameter and 18 in tall is...Ch. 1 - A standard pump design can be upgraded to higher...Ch. 1 - What is the annual cost to run a 2 HP system if it...Ch. 1 - Determine the displacement, in liters, for one...Ch. 1 - Determine the flow rate, in m3/hr, for another...Ch. 1 - At what speed, in rpm, does a single cylinder pump...Ch. 1 - Prob. 2CAEA
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- The uniform rods have a mass per unit length of 10kg/m . (Figure 1)If the dashpot has a damping coefficient of c=50N⋅s/m , and the spring has a stiffness of k=600N/m , show that the system is underdamped, and then find the pendulum's period of oscillation.arrow_forward10-50. The principal plane stresses and associated strains in a plane at a point are σ₁ = 30 ksi, σ₂ = -10 ksi, e₁ = 1.14(10-3), €2=-0.655(103). Determine the modulus of elasticity and Poisson's ratio. emps to plum... Wednesday FI a וח 2 Q Search 48 F5 - F6 4+ F7 FB F9 FIO FII F12 & * S 6 7 8 9 ㅁ F2 # *F3 3 $ 4 F4 % W E R T Y ப S ALT D F G H X C V B N J Σ H L ว { P [ ] ALT " DELETE BACKSPACE NUM LOCK T 7 HOME ENTER 4 PAUSE SHIFT CTRL Earrow_forward10−9. The state of strain at the point has components of ϵx = −100(10−6), ϵy = −200(10−6), and γxy=100(10−6). Use the strain transformation equations to determine (a) the in-plane principal strains and (b) the maximum in-plane shear strain and average normal strain. In each case specify the orientation of the element and show how the strains deform the element within the x−y plane.arrow_forward
- The strain gage is placed on the surface of the steel boiler as shown. If it is 0.5 in. long, determine the pressure in the boiler when the gage elongates 0.2(10−3) in. The boiler has a thickness of 0.5 in. and inner diameter of 60 in. Also, determine the maximum x, y in-plane shear strain in the material. Take Est=29(103)ksi, vst=0.3.arrow_forward(read image, answer given)arrow_forward6/86 The connecting rod AB of a certain internal-combustion engine weighs 1.2 lb with mass center at G and has a radius of gyration about G of 1.12 in. The piston and piston pin A together weigh 1.80 lb. The engine is running at a constant speed of 3000 rev/min, so that the angular velocity of the crank is 3000(2)/60 = 100л rad/sec. Neglect the weights of the components and the force exerted by the gas in the cylinder compared with the dynamic forces generated and calculate the magnitude of the force on the piston pin A for the crank angle 0 = 90°. (Suggestion: Use the alternative moment relation, Eq. 6/3, with B as the moment center.) Answer A = 347 lb 3" 1.3" B 1.7" PROBLEM 6/86arrow_forward
- 6/85 In a study of head injury against the instrument panel of a car during sudden or crash stops where lap belts without shoulder straps or airbags are used, the segmented human model shown in the figure is analyzed. The hip joint O is assumed to remain fixed relative to the car, and the torso above the hip is treated as a rigid body of mass m freely pivoted at O. The center of mass of the torso is at G with the initial position of OG taken as vertical. The radius of gyration of the torso about O is ko. If the car is brought to a sudden stop with a constant deceleration a, determine the speed v relative to the car with which the model's head strikes the instrument panel. Substitute the values m = 50 kg, 7 = 450 mm, r = 800 mm, ko = 550 mm, 0 = 45°, and a = 10g and compute v. Answer v = 11.73 m/s PROBLEM 6/85arrow_forwardUsing AutoCADarrow_forward340 lb 340 lb Δarrow_forward
- 4. In a table of vector differential operators, look up the expressions for V x V in a cylindrical coordinate system. (a) Compute the vorticity for the flow in a round tube where the velocity profile is = vo [1-(³] V₂ = Vo (b) Compute the vorticity for an ideal vortex where the velocity is Ve= r where constant. 2πг (c) Compute the vorticity in the vortex flow given by Ve= r 2лг 1- exp ( r² 4vt (d) Sketch all the velocity and vorticity profiles.arrow_forwardIn the figure, Neglects the heat loss and kinetic and potential energy changes, calculate the work produced by the turbine in kJ T = ??? Steam at P=3 MPa, T = 280°C Turbine Rigid tank V = 1000 m³ Turbine Rigid tank V = 100 m³ V = 1000 m³ V = 100 m³ The valve is opened. Initially: evacuated (empty) tank O a. 802.8 Initially: Closed valve O b. 572 O c. 159.93 Od. 415 e. 627.76 equilibriumarrow_forwardPlease find the torsional yield strength, the yield strength, the spring index, and the mean diameter. Use: E = 28.6 Mpsi, G = 11.5 Mpsi, A = 140 kpsi·in, m = 0.190, and relative cost= 1.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Dimensional Analysis - in physics; Author: Jennifer Cash;https://www.youtube.com/watch?v=c_ZUnEUlTbM;License: Standard youtube license