INGM 223 Test 1 (Chapter 10, 11 & 12) PDF 2022
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2022
eFundi
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Summary
This is a 2022 eFundi INGM 223 test covering chapters 10, 11, and 12. The test focuses on topics like casting techniques, solidification, and material properties. It contains multiple-choice questions and true/false questions.
Full Transcript
7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes Tests & Quizzes INGM 223 - Test 1 (Chapter 10,11 & 12) Return to Assessment List Part 1 of 3 - Chapter 10 / 14.0 Points Question 1 of 7 2.0 Points What cause...
7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes Tests & Quizzes INGM 223 - Test 1 (Chapter 10,11 & 12) Return to Assessment List Part 1 of 3 - Chapter 10 / 14.0 Points Question 1 of 7 2.0 Points What causes coarse dendritic structures with large spacing between the arms? Select the two answers that fit. A. Slow cooling rates B. long local solidification time C. Higher cooling rates D. short local solidification time Answer Key: A, B Question 2 of 7 2.0 Points Which one of the following does not influence the castability of an alloy during a casting proses: A. Rate of pouring B. Shrinkage C. Viscosity D. Surface tension https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 1/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes Answer Key: B Question 3 of 7 2.0 Points 3 Metal pieces being cast have the same volume, but different shapes: One is a pyramid shape, one a cube, and the other a cylinder with its height equal to two times its diameter. Which piece will solidify the fastest? Assume that n=2. A. All three solidify at the same rate B. Cylinder C. Pyramid shape D. Cube Answer Key: B Question 4 of 7 2.0 Points True or False? A sprue serves as a reservoir of molten metal to supply any molten metal necessary to prevent porosity. True False Answer Key: False Question 5 of 7 2.0 Points Name the steps of the sand casting process as shown in the attached figure Please select the correct option. https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 2/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes A. A – Core , B – Stress relieving , C – Removal of cores B. A – Core ; B – Removal of pattern C – Cleaning of casting C. A – Mold, B – Cleaning of casting, C – Finishing operations D. A – Mold, B – Removal of sand, C – Cleaning and finishing Answer Key: D Question 6 of 7 2.0 Points Which one of the following is not a cause of porosity in a casting process A. Shrinkage of the material B. Dissolved gasses C. Rate of pouring Answer Key: C Question 7 of 7 2.0 Points True or False? Runners are the channels that carry the molten metal from the sprue into the mold cavity. True False https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 3/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes Answer Key: True Part 2 of 3 - Chapter 11 / 24.0 Points Question 1 of 12 2.0 Points Choose the incorrect option: Casting techniques for single-crystal components include: A. Single-crystal growing B. Single-crystal blades C. Conventional casting of turbine blades D. Directionally solidified blades E. Transverse grain blades Answer Key: E Question 2 of 12 2.0 Points Closed die forging dies are typically manufactured using this process A. Plaster mould casting B. Lost foam casting C. Ceramic mold casting D. Shell mould casting https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 4/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes Answer Key: D Question 3 of 12 2.0 Points High accuracy gearbox housings from grey cast iron can typically be manufactured using this process A. Lost foam casting B. Plaster mold casting C. Shell mold casting D. Ceramic mold casting Answer Key: C Question 4 of 12 2.0 Points True or False? Thixo-forming/molding processing is where the metal that enters the die is stirred so that all the dendrites are crushed into fine solids. True False Answer Key: False Question 5 of 12 2.0 Points Choose the correct option https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 5/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes In the vacuum casting process, a mixture of (1)______ is molded over metal dies and cured with (2)______ A. (1) - sand and polyurethane, (2) - amine vapor B. (1) - sand and urethane, (2) - amine vapor C. (1) - sand and urethane, (2) - arsenic vapor D. (1) - sand and polyurethane, (2) - arsenic vapor Answer Key: B Question 6 of 12 2.0 Points The attached figure shows the following process A. Cold chamber die casting B. Vacuum casting C. Pressure casting D. Hot chamber die casting https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 6/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes Answer Key: D Question 7 of 12 2.0 Points What type of molding is used to make molds for reactive metals, such as titanium and zirconium. A. Rammed graphite B. Ceramic C. Frozen mercury D. Yttrium oxide Answer Key: A Question 8 of 12 2.0 Points Select the correct option, to fill in the blank: A seed crystal dipped into the molten metal while being pulled out slowly and rotated, is known as _______ method : A. Floating zone B. Crystal dipping C. Czochralski D. Crystal rotation Answer Key: C Question 9 of 12 2.0 Points The attached figure shows the following process. https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 7/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes A. Vacuum casting B. Die casting C. Dip casting D. Pressure casting Answer Key: A Question 10 of 12 2.0 Points Which of the following products are cast using an expendable mold? A. Office equipment B. Mag wheels C. Gear housings D. Cylinder heads E. Lock components Answer Key: D Question 11 of 12 2.0 Points https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 8/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes Which of the following products are cast using Centrifugal Casting? A. Screw drivers B. Impellers C. Cylinder heads D. Crank shafts E. Artillery gun barrels Answer Key: E Question 12 of 12 2.0 Points Which casting process would you use to cast a large (200kg) mold that will be used to mold rubber components? A. Ceramic-mold casting B. Die casting C. Evaporative pattern D. Sand casting E. Investment Answer Key: A Part 3 of 3 - Chapter 12 / 12.0 Points Question 1 of 6 2.0 Points True or False? When a gate meets the casting, a fillet will help reduce turbulent flow of the liquid material? True https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 9/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes False Answer Key: True Question 2 of 6 2.0 Points Which is not part of the design considerations for expendable mold processes A. Size of parts B. Riser design C. Manufacturing method D. Mold material E. Mold layout Answer Key: B, E Question 3 of 6 2.0 Points Shrinkage cavities in a casting product are normally the result of ? A. Irregular thicknesses in the product B. Wrong mold material C. Cooling too slow D. Cooling too fast Answer Key: A Question 4 of 6 https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 10/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes 2.0 Points True or False? When unconstrained by a sprue, a molten metal should not be allowed to flow vertically. True False Answer Key: True Question 5 of 6 2.0 Points Arrange the following materials from worst to best cast-ability. 1. Zinc 2. Carbon Steel 3. Malleable Cast Iron 4. Copper Please select the correct option A. 1-3-2-4 B. 1-4-3-2 C. 2-4-3-1 D. 4-3-2-1 Answer Key: C Question 6 of 6 2.0 Points Which is not part of the design considerations for expendable mold casting A. Size of Parts B. Riser design C. Manufacturing method D. Mold material E. Mold layout Answer Key: A, C, D https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 11/12 7/26/24, 9:17 AM eFundi : INGM 223 1-1 P 2022 : Tests & Quizzes https://efundi.nwu.ac.za/portal/site/19f4fe0e-3527-449f-8b1b-8fd0ed8fb228/tool/28541f6b-f83d-4608-8956-d369e38b5b1d/jsf/index/mainIndex 12/12
