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d. Decarburizing. PDF created with pdfFactory Pro trial version
16. The forming of processed part by forming –the plastic flow of metal in dies and the reduction of tubing by pulling through a die is known as: a. Piercing. b. Drawing. c. Extrusion. d. Forging. 17. The maximum stresses to which a material may be subjected without any permanent strain remaining upon complete release of stress is: a. Ultimate Yield. b. Elastic limit. c. Ultimate tensile. d. Fatigue life. 18. The conversion of billets into lengths of uniform cross section by forcing the plastic metal through a die orifice of the desired cross- sectional outline is : a. Forging b. Drawing. c. An Extrusion. d. A casting. e. Cold working. 19. Heating to and holding at a suitable temperature and then cooling at suitable rate for such purposes as reducing hardness, improving machinability, or obtaining desired mechanical physical or other properties is termed as: a. Preheating. b. Annealing. c. Stress relieving. d. Age hardening. e. Quenching. PDF created with pdfFactory Pro trial version
20. The swerving of an electric arc from his normal path because of residual magnetism is called : a. Arcing. b. Eccentricity. c. Arc short. d. Arc blow. e. Distortion. 21. A large forging has been repaired by welding, magnetic particle inspection of the repair weld deposit reveals an irregular indication running parallel with the weld process , it is located near the center of the bead and starts and ends by changing slightly from the axial direction , this kind of discontinuities is most likely a: a. Lap. b. Cracks. c. Slag inclusion. d. Lack of fusion e. Crater. 22. Porosity, misrun, cold shut, hot tears and inclusion are examples of the discontinuities found in: a. Forging. b. Casting. c. Slag inclusion. d. Ingots. e. Heat treated parts. 23. The temperature of magnetic transformation below which a metal or alloy is magnetic and above it is non magnetic , is called : a. Melting temperature. b. Curie point. c. Ambient temperature. d. Unstable temperature. e. Residual temperature. PDF created with pdfFactory Pro trial version
24. A zone or area of minute discontinuities in casting during solidification are called: a. Bursts. b. Hot tear. c. Flakes. d. Fatigue cracks. e. Shrinkage. 25. Which of the following best describes the causes of metal fatigue: a. Loading beyond the Yield strength of the material. b. Impact loading c. Cyclic loading d. Alternating compression loading. e. Constantly increasing static loading. 26. Which of the following discontinuities is not associated with welding process? a. Porosity. b. Lack of fusion. c. Lack of penetration. d. Bursts. e. Crater crack. 27. Which of the following discontinuities is not associated with casting process? a. Hot tear. b. Cold shut. c. Porosity. d. Lamination. e. Microshirinkage. PDF created with pdfFactory Pro trial version
28. Sever grinding cracks appears as: a. Wave like pattern.