Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 17RQ
Which of the following statements about an oils viscosity is not true?
- The ability of oil to resist flow is its viscosity.
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During a plant visit, it was noticed that a 12-m-long section of a 10-cm-diameter steam pipe is completely
exposed to the ambient air. The temperature measurements indicate that the average temperature of the
outer surface of the steam pipe is 75°C when the ambient temperature is 5°C. There are also light winds in
the area at 10 km/h. The emissivity of the outer surface of the pipe is 0.8, and the average temperature of
the surfaces surrounding the pipe, including the sky, is estimated to be 0°C. Determine the amount of heat
lost from the steam during a 10-h-long work day.
Steam is supplied by a gas-fired steam generator that has an efficiency of 80 percent, and the plant pays
$1.05/therm of natural gas. If the pipe is insulated and 90 percent of the heat loss is saved, determine the
amount of money this facility will save a year as a result of insulating the steam pipes. Assume the plant
operates every day of the year for 10 h. State your assumptions.
An old fashioned ice cream kit consists of two concentric cylinders of
radii Ra and Rb. The inner cylinder is filled with milk and ice cream
ingredients while the space between the two cylinders is filled with an
ice-brine mixture. Ice cream begins to form on the inner surface of the
inner cylinder. To expedite the process, would you recommend
rotating the inner cylinder?
Justify your recommendation.
icecream/
ice-brine
Ra
Rb
Find temperatures STRICTLY USING RITZ APPROXIMATION METHOD
Chapter 8 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 8 - Describe the information found in a VIN.Ch. 8 - Technician A stresses the need to follow the...Ch. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - True or False? Legally, an RO protects the shop...Ch. 8 - While examining the color of an engines coolant:...Ch. 8 - While checking the condition of a vehicles ATF:...Ch. 8 - Technician A says that if a drive belt does not...Ch. 8 - List five different types of oil rating systems.Ch. 8 - Technician A says that to accurately check brake...
Ch. 8 - Why should you wipe off the outside of a zerk...Ch. 8 - True or False? All engine coolants contain some...Ch. 8 - List at least five things that should be checked...Ch. 8 - True or False? If brake fluid is dark or brown...Ch. 8 - Which of the following statements about drive belt...Ch. 8 - Prob. 16RQCh. 8 - Which of the following statements about an oils...Ch. 8 - While discussing a vehicles maintenance program:...Ch. 8 - Which of the following is not a true statement...Ch. 8 - True or False? An oil with the classification of...Ch. 8 - While discussing the effects of overtorquing wheel...Ch. 8 - The most commonly used brake fluid in domestic...Ch. 8 - Which of the following greases are best suited for...Ch. 8 - While discussing the special preventive...Ch. 8 - How does a technician determine the proper...
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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
- Solve this Problem using RITZ APPROXIMATION. STEP BY STEParrow_forwardB/40 The body is constructed of a uniform square plate, a uniform straight rod, a uniform quarter‐circular rod, and a particle (negligible dimensions). If each part has the indicated mass, determine the mass moments of inertia of the body about the x‐, y‐, and z‐axes. Answer Given.arrow_forward(read image) Answer:arrow_forward
- (read image) Answer Givenarrow_forwardB/16. The plane area shown in the top portion of the figure is rotated 180° about the x‐axis to form the body of revolution of mass m shown in the lower portion of the figure. Determine the mass moment of inertia of the body about the x‐axis. Answer Givenarrow_forward(read image) Answer:arrow_forward
- (read image) Answer:arrow_forward2nd Law of Thermodynamics A 1.5-ft3 rigid tank contains saturated refrigerant-134 at 170 psia. Initially, 20 percent of the volume isoccupied by liquid and the rest by vapor. A valve at the top of the tank is now opened, and vapor is allowedto escape slowly from the tank. Heat is transferred to the refrigerant such that the pressure inside the tankremains constant. The valve is closed when the last drop of liquid in the tank is vaporized. Determine thetotal heat transfer for this process.arrow_forwardDraw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum normal stress due to bending. 4.8 kips/ft 32 kips B C D E I Hinge 8 ft. 2 ft 5 ft 5 ft W12 x 40arrow_forward
- 2nd Law of Thermodynamics A rigid, insulated tank that is initially evacuated is connected through a valve to the supply line that carrieshelium at 300 kPa and 140◦C. Now the valve is opened, and helium is allowed to flow into the tank until thepressure reaches 300 kPa, at which point the valve is closed. Determine the flow work of the helium in thesupply line and the final temperature of the helium in the tank.arrow_forwardDraw the shear and bending-moment diagrams for the beam and loading shown, and determine the maximum normal stress due to bending. 5 kips 10 kips B I W14 x 22 -5 ft -8 ft 5 ft-arrow_forward2nd Law of Thermodynamics Liquid water at 200 kPa and 25◦C is heated in a chamber by mixing it with superheated steam at 200 kPaand 250◦C. cold water enters the chamber at a rate of 2 kg/s. If the mixture leaves the mixing chamber at50◦C, determine the mass flow rate of the superheated steam required.arrow_forward
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