AUTOMOTIVE TECHNOLOGY TECH MANUAL
7th Edition
ISBN: 9781337794220
Author: ERJAVEC
Publisher: CENGAGE L
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Textbook Question
Chapter 21, Problem 3MC
What type of memory is used to store the accumulated mileage in an electronic odometer?
- RAMc PROM
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Required information
Water initially at 200 kPa and 300°C is contained in a piston-cylinder device fitted with stops. The water is allowed to cool
at constant pressure until it exists as a saturated vapor and the piston rests on the stops. Then the water continues to cool
until the pressure is 100 kPa.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Water
200 kPa
300°C
On the T-V diagram, sketch, with respect to the saturation lines, the process curves passing through the initial, intermediate, and final states of the water. Label the
T, P, and V values for end states on the process curves.
Please upload your response/solution by using the controls provided below.
A piston-cylinder device contains 0.87 kg of refrigerant-134a at -10°C. The piston that is free to move has a mass of 12 kg
and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat is transferred to refrigerant-134a until the
temperature is 15°C. Use data from the tables.
R-134a
-10°C
Determine the change in the volume of the cylinder of the refrigerant-134a if the specific volume and enthalpy of R-134a at the initial
state of 90.4 kPa and -10°C and at the final state of 90.4 kPa and 15°C are as follows:
= 0.2418 m³/kg, h₁ = 247.77 kJ/kg
3
v2 = 0.2670 m³/kg, and h₂ = 268.18 kJ/kg
The change in the volume of the cylinder is
m
Chapter 21 Solutions
AUTOMOTIVE TECHNOLOGY TECH MANUAL
Ch. 21 - What is the purpose of an IVR?Ch. 21 - Explain how an air-core gauge works.Ch. 21 - What are two ways to provide input for the...Ch. 21 - Describe the two types of instrument panel...Ch. 21 - What is the device found in some fuel tanks to...Ch. 21 - What is the correct way to check a coolant...Ch. 21 - What type of sending unit is typically used to...Ch. 21 - What is the major difference between an indicator...Ch. 21 - True or False? A driver information center...Ch. 21 - True or False? The ABS lamp turns on whenever the...
Ch. 21 - The indicator needle on a speedometer is held to...Ch. 21 - Which of the following uses a permanent magnet and...Ch. 21 - What type of memory is used to store the...Ch. 21 - Which of the following is not a true statement...Ch. 21 - Which of the following statements about oil gauge...Ch. 21 - While discussing what the maintenance reminders...Ch. 21 - None of the engines gauges works: Technician A...Ch. 21 - The oil pressure light stays on whenever the...Ch. 21 - A digital speedometer constantly reads 0 mph:...Ch. 21 - All gauges operate but read lower than normal:...Ch. 21 - When testing an engine temperature sensor:...Ch. 21 - The coolant temperature gauge stays low (cold)...Ch. 21 - While discussing the instrumentation on a Toyota...Ch. 21 - The TPM warning lamp is lit: Technician A says...Ch. 21 - The yellow electronic throttle control warning...
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