Q1. Multiple choice question (10 marks) i. The volume of metal that enters the rolling stand...
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Q1. Multiple choice question (10 marks) i. The volume of metal that enters the rolling stand (a) should increase after rolling process ii. (b) should decrease after rolling process (c) should remain same after rolling process (d) unpredictable What is the process, in which the metal is caused to flow through a restricted orifice to create an extremely elongated strip of uniform and comparatively smaller cross-sectional area, called: (a) Rolling (b) Extrusion (c) Drawing (d) Spinning iii. Johnson's formula is associated with which one of the four bulk deformation processes (a) bar and wire drawing (b) extrusion (c) forging (d) rolling iv. In which of the following extrusion operation is friction a factor in determining the extrusion force (a) direct extrusion (b) indirect extrusion (c) None of these v. The particle size that can pass through a screen is obtained by taking the reciprocal of the mesh count of the screen: (a) true (b) false vi. Which of the following powder shapes would tend to have the lowest inter particle friction: (a) acicular, (b) cubic, (c) flakey, (d) spherical, and (e) rounded vii. Impregnation refers to which of the following (a) filling the pores of the PM part with a molten metal, (b) soaking oil by capillary action into the pores of a PM part (c) something that should not happen in a factory (d) None of the above viii. Which of the following rolling mill types are associated with relatively small diameter rolls in contact with the work X. (a) continuous rolling mill, (b) four-high mill, (c) reversing mill, (d) three-high configuration ix. In atomization (a) passing molten metal through orifice and cooling it by dropping into water (b) molten metal is forced through a small orifice and broken up by a stream of compressed air (c) powder of metal is made by ball milling (d) the hydrogen reduces the oxide to metallic powder The process carried out in powder metallurgy is as follows i. preparation of powder ii. Grading of powder iii. Compacting of powder iv. Sintering The correct sequence is (a) i, iii, ii, iv (b) i, ii, iii, iv (c) iii, i, ii, iv (d) ii, i, iii, iv Q1. Multiple choice question (10 marks) i. The volume of metal that enters the rolling stand (a) should increase after rolling process ii. (b) should decrease after rolling process (c) should remain same after rolling process (d) unpredictable What is the process, in which the metal is caused to flow through a restricted orifice to create an extremely elongated strip of uniform and comparatively smaller cross-sectional area, called: (a) Rolling (b) Extrusion (c) Drawing (d) Spinning iii. Johnson's formula is associated with which one of the four bulk deformation processes (a) bar and wire drawing (b) extrusion (c) forging (d) rolling iv. In which of the following extrusion operation is friction a factor in determining the extrusion force (a) direct extrusion (b) indirect extrusion (c) None of these v. The particle size that can pass through a screen is obtained by taking the reciprocal of the mesh count of the screen: (a) true (b) false vi. Which of the following powder shapes would tend to have the lowest inter particle friction: (a) acicular, (b) cubic, (c) flakey, (d) spherical, and (e) rounded vii. Impregnation refers to which of the following (a) filling the pores of the PM part with a molten metal, (b) soaking oil by capillary action into the pores of a PM part (c) something that should not happen in a factory (d) None of the above viii. Which of the following rolling mill types are associated with relatively small diameter rolls in contact with the work X. (a) continuous rolling mill, (b) four-high mill, (c) reversing mill, (d) three-high configuration ix. In atomization (a) passing molten metal through orifice and cooling it by dropping into water (b) molten metal is forced through a small orifice and broken up by a stream of compressed air (c) powder of metal is made by ball milling (d) the hydrogen reduces the oxide to metallic powder The process carried out in powder metallurgy is as follows i. preparation of powder ii. Grading of powder iii. Compacting of powder iv. Sintering The correct sequence is (a) i, iii, ii, iv (b) i, ii, iii, iv (c) iii, i, ii, iv (d) ii, i, iii, iv
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Answer i b should decrease after rolling process ii c Drawing iii d Rolling iv b indirect extrusion v a true vi d spherical vii b soaking oil by capillary action into the pores of a PM part viii a con... View the full answer
Related Book For
Advanced Accounting
ISBN: 978-0134472140
13th edition
Authors: Floyd A. Beams, Joseph H. Anthony, Bruce Bettinghaus, Kenneth Smith
Posted Date:
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