AUTOMOTIVE TECHNOLOGY -W/MINDTAP ACCESS
7th Edition
ISBN: 9780357096789
Author: ERJAVEC
Publisher: CENGAGE L
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Chapter 21, Problem 2MC
Which of the following uses a permanent magnet and two electromagnets?
- Air-core gauge
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Chapter 21 Solutions
AUTOMOTIVE TECHNOLOGY -W/MINDTAP ACCESS
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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- A system, in a closed container, consists of an unknown number of components and three phases. You are told that the system is fully defined by giving you only one mole fraction! What is the number components that is present? 3 1 2 The question is ill-posed.arrow_forwardA mixture of 2 components in 2 phases are present. You are given the temperature and mole fraction. How many additional variables can be specified before the system is completely determined? none 2 the system is overspecified 1 3arrow_forwardAt a Pressure of 600 mm Hg, match the substance with the boiling temperature. 54.69°C 1. n-Pentane 49.34°C 2. n-Hexane 3. Acetone 29.32°C く 61.40°C 4. Chloroformarrow_forward
- A mixture of oil and gas flows through a horizontal pipe with an inside diameter of 150 mm. The respective volumetric flow rates for the oil and gas are 0.015 and 0.29 m³s-1. Determine the gas void frac- tion and the average velocities of the oil and gas. The friction factor may be assumed to be 0.0045. The gas has a density of 2.4 kgm³ and viscosity of 1 x 10-5 Nsm-2. The oil has a density of 810 kgm³ and density of 0.82 Nsm². Answer: 0.79, 20.8 ms-1, 4 ms-1arrow_forward4. An experimental test rig is used to examine two-phase flow regimes in horizontal pipelines. A particular experiment involved uses air and water at a temperature of 25°C, which flow through a horizontal glass tube with an internal diameter of 25.4 mm and a length of 40 m. Water is admitted at a controlled rate of 0.026 kgs at one end and air at a rate of 5 x 104 kgs in the same direction. The density of water is 1000 kgm³, and the density of air is 1.2 kgm3. Determine the mass flow rate, the mean density, gas void fraction, and the superficial velocities of the air and water. Answer: 0.02605 kgs 1, 61.1 kgm³, 0.94, 0.822 ms-1, 0.051 ms-1arrow_forward1. Determine the range of mean density of a mixture of air in a 50:50 oil-water liquid phase across a range of gas void fractions. The den- sity of oil is 900 kgm³, water is 1000 kgm³, and gas is 10 kgm³. 2. Describe, with the use of sketches, the various flow regimes that can exist in a vertical pipe carrying two-phase flow (liquid and gas).arrow_forward
- A mixture of high pressure water and steam at a rate of 0.5 kgs-¹ flows up a vertical tube with an inside diameter of 25.4 mm at a pres- sure 22 bar. Determine the type of flow if the mass quality is 1%. The density of the water is 845 kgm³, the density of steam is 10.8 kgm³, and the viscosity of the water is 1.24 x 104 Nsm2. Answer: Slug flowarrow_forward5. Describe, with the use of sketches, the various two-phase flow regimes that can exist in a horizontal pipe carrying a liquid and a gas. 6. Explain what is meant by gas hold-up and describe ways in which it can be measured.arrow_forwardA mixture of air and water at a temperature of 25°C flows up through a vertical tube with a length of 4 m and an internal diameter of 25.4 mm with the exit of the tube being at atmospheric pressure. The mass flows of the air and the water are 0.007 kgs¹ and 0.3 kgs-¹, respectively. For air, the density is 1.2 kgm3 and viscosity is 1.85 x 10-5 Nsm-2, and for water, the density is 1000 kgm-3 and viscosity is 8.9 × 10-4 Nsm 2. Answer: 2.7 kNm 2marrow_forward
- At a Pressure of 200 mm Hg, match the substance with the boiling temperature. 69.50°C 1. Benzene 1.92°C 2. Toluene 41.94°C 3. n-Pentane 4. n-Hexane 31.61°Carrow_forwardAt a Pressure of 400 mm Hg, match the substance with the boiling temperature. 62.89°C 1. Styrene 122.69°C 2. Ethanol 3. Toluene 89.48°C 4. Benzene 60.61°Carrow_forward8. A gas is admitted at a rate of 0.015 m³s-¹ to a vertical glass pipe with an inside diameter of 50 mm. The gas bubbles that form travel with a velocity of 32 ms-¹. Determine the gas void fraction and the velocity of the liquid if the volumetric flow is 2.5 x 10-5 m³s-1. Answer: 0.24, 1.7 ms-1 9 Characterise the main concepts of a homogeneous flow model sepa-arrow_forward
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