SUES TEST1 CH110111314 ANSWERS FALL 2008.docVIP

EME3023 “ADVANCED MANUFACTURING PROCESSES” SHANGHAI UNIVERSITY OF ENGINEERING SCIENCE AUTOMOTIVE ENGINEERING COLLEGE TEST 1 FALL 2008: BY PROFESSOR THOMAS A. HAMADE PRINT STUDENT NAME (100 POINTS) _____________________________ ALL TRUE/FALSE QUESTIONS WORTH 1 POINT EACH (18 QUESTIONS: 18 POINTS). THE REMAINING MULTIPLE CHOICE AND ANSWER QUESTIONS WORTH 2 POINTS EACH (TOTAL 12 QUESTIONS: 24 POINTS). PROBLEMS WORTH 58 POINTS. TEST COVERS CH1, CH10, CH11, CH13 CH14. 1. A primary industry is one that cultivates and exploits natural resources, such as agriculture or mining. A secondary industry takes the outputs of primary industries and converts them to consumer and capital goods. __X__ TRUE ____ FALSE 2. Name the three basic categories of materials. Answer. The three basic categories of engineering materials are (1) metals, (2) ceramics, and (3) polymers. A fourth category, composites, is a non-homogeneous mixture of the other types and therefore is not a basic category. 3. The two subclasses of assembly processes are (1) permanent joining and (2) mechanical fastening. __X__ TRUE _____ FALSE 4. Which one of the following engineering materials is defined as a compound containing ceramic and plastic elements: (a) ceramic, (b) composite, (c) metal, or (d) polymer? Answer. (b) 5. Particulate processing of metals and ceramics involves the following steps (a) pressing, and (b) sintering? __X__ TRUE _____ FALSE 6. Which one of the following is a machine used to perform extrusion: (a) forge hammer, (b) milling machine, (c) rolling mill, (d) press, (e) torch? Answer (d). 7. The core determines the internal shape of the cast part, while a pattern determines its external geometry if the casting includes a cavity. __X___ TRUE ____ FALSE 8. Turbulent flow of molten metal into the mold should be avoided because turbulence causes the following problems: (1) it accelerates formation of oxides in the solidified metal, and (2) it causes mold erosion or gradual wearin