MANUFACTURING AND PRODUCTION TECHNOLOGY MULTIPLE CHOICE QUESTIONS
Q21. The force acting on the punch goes on increasing if angle of shear
(c) remains constant
(d) none of the above.
Q22. The average force to cut any work-piece in case of die cutting operation is equal to
(a) one-fourth of the maximum force
(b) one-third of the maximum force
(c) one-half of the maximum force
(d) two-third of the maximum force.
Q23. Which of the following methods are used for manufacturing gears?
(d) all of the above
Q24. For making heavy gears of cast iron and steel, which of the following methods is particularly used?
(a) sand casting
Q25. For making thin gears from sheet metals up to thickness 3 mm, the method used is
Q26. Which of the following material is used for manufacturing gears by power-metallurgy?
(a) cast iron
(c) plastic materials
(d) both (b) and (c).
Q27. The method of manufacturing gears by extrusion is used for
(a) bevel gears
(b) worm gears
(c) spur gears
(d) helical gears.
Q28. An oxidising process, used for aluminium and magnesium articles, is known as
Q29. The process of coating a thin layer of phosphate on steel is known as
Q30. Choose the wrong statement
(a) Milling is not a production process.
(b) The initial cost of the cutter of the milling machines is lower than cutters for hobbing and shaping processes.
(c) Cutter No. 4 is suitable for cutting gears with 35 to 54 teeth.
(d) Internal gears can be very conveniently cut by a broach tool.
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