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 28, Problem 5ASRQ
Technician A says piezo material is a type of crystal that rapidly shrinks when it is exposed to electrical current. Technician B says piezo material shrinks very slowly when current to it is stopped. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A nor B
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Chapter 28 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 28 - Pump gasoline may contain a small amount of...Ch. 28 - True or False? The diesel fuels antiknock quality...Ch. 28 - What percentage of ethanol does E85 contain?Ch. 28 - List five advantages the use of piezoelectric...Ch. 28 - What does the Reid vapor pressure (RVP) test...Ch. 28 - List three alternative fuels for an internal...Ch. 28 - Why is the sulfur content in gasoline limited?Ch. 28 - Prob. 8RQCh. 28 - What is particulate matter and when is it...Ch. 28 - What are oxygenates and why are they added to...
Ch. 28 - How does SCR lower the content in a diesels...Ch. 28 - True or False? Piezoelectric materials can emit a...Ch. 28 - Name three driveability factors that are affected...Ch. 28 - Which of the following statements about hydrogen...Ch. 28 - Which of the following chemicals is commonly added...Ch. 28 - Technician A says that the use of methanol in...Ch. 28 - Technician A says that reformulated gasoline...Ch. 28 - Technician A says that dedicated vehicles are...Ch. 28 - Technician A says white smoke in the exhaust of a...Ch. 28 - Technician A says piezo material is a type of...Ch. 28 - Prob. 6ASRQCh. 28 - While discussing chemicals that are currently...Ch. 28 - While discussing common rail fuel injection...Ch. 28 - Technician A says diesel engines consume less fuel...Ch. 28 - While discussing the reasons why the use of E85...
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- Identify the wrong statement for the material properties in the following. O a. Depends on the electronic structure of atoms. O b. Depends on the composition of atoms. c. Depends on the shape and size of the crystals. d. Depends on the arrangement time of atoms.arrow_forwardAs a crystalline material is heated-up it experiences the following structural changes. Select one: a. The volume increases whilst libration magnitudes increase. b. The volume decreases whilst libration magnitudes decrease. c. The volume decreases whilst libration magnitudes increase. d. The volume increases whilst libration magnitudes decrease. e. None of the above.arrow_forwardTrue or False 1. It is acceptable to use a hoist to lift something that weighs more than the rating on the hoist when the load is lifted carefully. 2. Typically, combustible material accidents occur at higher temperatures while flammable material accidents occur at room temperature. 3. Water reactive chemicals include calcium carbide, cyclooctene, metal hydrides, and metals like sodium and potassium. 4. When driving material lifting equipment, workers should maintain at least a 5-foot clearance from overhead power lines. 5. Workers should use at least 2 straps placed equally from the center when lifting a long I-beam. ******************************************************************************************** Multiple Choice 1. Which of the following chemicals is not considered a liver toxin? A. Glacial acetic acid B. Carbon Tetrachloride C. Ethanol D. Trichloroethylene 2. Which of the following is a safety practice intended to protect workers from a lightning strike? A. Use a metal…arrow_forward
- Thermosetting plastic materials have the cost saving advantage in that they can be injection molded and therefore have faster cycling times and thermal plastic materials that can only be compression molding. True or false.arrow_forwardQ1: Select the correct answer. up to A. Resilience is the energy absorbed by the material a. yield. b. ultimate sensile stress. c. fracture. B. The grain boundaries are a. less chemically active than grains themselves. b. the regions of orientation mismatch of the neighbouring grains. c. classified as linear defects. C. All polycrystalline materials are considered as isotropic because a) they have crystallographic direction-mechanical properties independence relation b) all the crystals' orientations are the same c) the random direction of many grains cancels the anisotropic effect D. Dislocations slip process in metallic crystalline materials a) is essential to explain why the metals exhibit much lower strength than that theoretically predicted based on metallic bonding. b) makes metals and alloys brittle. c) cannot be used to control the mechanical properties of metallic materials E. The atomic stacking ABCABCABC is for d) FCC crystal structure e) BCC crystal structure f) HCP crystal…arrow_forwardChoose the bestarrow_forward
- Briefly describe an alloy.arrow_forwardWhich choice below best describes the mechanical property of materials called toughness? a. Ability to compress without permanent deformation b. Ability to bend in the elastic range c. How much energy a material can absorb without breaking d. Indentation resistancearrow_forward6. Choose correct sentences (Ionic bond) a. Water molecule, ammonia molecules b. Graphenes bonding forces in graphite c. Sodium chloride (Ionic bond) d. Carbon, silicon, germanium e. Diamond (Hydrogen bond solids) (Van der waals bond) (Covalent bond) 7. (Choose incorrect sentences) a. Interstitial Alloys are metal alloys formed by substituting one metal atom for another metal atom of similar size. a. Substitutional Alloys are metal alloys formed by inserting smaller atoms into holes of the metal lattice. c. None 8. To relieve internal stress in heat treatment techniques is obtained at: a. Annealing b. Normalizing c. Hardening d. Tampering e. Curborization f. Quenching 9. When the angle of misorientation is parallel the boundary due to an array of screw dislocation it's called: a. Grain structure b. Tilt boundary c. Grain boundaries d. Twist boundary e. Stacking faultsarrow_forward
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