Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 8, Problem 7RQ
While checking the condition of a vehicles ATF: Technician A says that if the fluid has a burnt color or odor, the fluid has been overheated. Technician B says that a milky color indicates that engine coolant has been leaking into the transmission’s cooler in the radiator. Who is correct?
- Technician A
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A piston–cylinder device contains 50 kg of water at 250 kPa and 25°C. The cross-sectional area of the piston is 0.1 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.26 m3, the piston reaches a linear spring whose spring constant is 100 kN/m. More heat is transferred to the water until the piston rises 20 cm more.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Determine the work done during this process.
The work done during this process is kJ.
A 4-m × 5-m × 7-m room is heated by the radiator of a steam-heating system. The steam radiator transfers heat at a rate of 10,000 kJ/h, and a 100-W fan is used to distribute the warm air in the room. The rate of heat loss from the room is estimated to be about 5000 kJ/h. If the initial temperature of the room air is 10°C, determine how long it will take for the air temperature to rise to 25°C. Assume constant specific heats at room temperature. The gas constant of air is R = 0.287 kPa·m3/kg·K (Table A-1). Also, cv = 0.718 kJ/kg·K for air at room temperature (Table A-2).
Steam enters the radiator system through an inlet outside the room and leaves the system through an outlet on the same side of the room. The fan is labeled as W sub p w. The heat is given off by the whole system consisting of room, radiator and fan at the rate of 5000 kilojoules per hour.
It will take 831 Numeric ResponseEdit Unavailable. 831 incorrect.s for the air temperature to rise to 25°C.
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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