A solid cylinder of diameter 100 mm and height 50 mm is forged between two frictionless flat dies to a height of 25mm. The percentage change in diameter is

A. 0

B. 2.07

C. 20.7

D. 41.4

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Discontinuous chips are formed during machining of
  2. Which of the following engineering materials is the most suitable candidate for hot chamber die casting?
  3. The broaching operation in which either the work or the tool moves across the other, is known as
  4. In _________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to…
  5. The correct sequence of tool materials in increasing order of their ability to retain their hot hardness…
  6. The chamfering is an essential operation after
  7. A set of eight form relieved milling cutters for each module is provided to enable cutting of gears…
  8. What is the type of welding defect is caused due to stresses on heating and cooling called?
  9. Which of the following operation is first performed?
  10. In a particular type of welding, flux is prepared in the form of a coarse powder and granulated flux…
  11. The hard grade grinding wheels are denoted by the letters
  12. The abrasive slurry used in ultrasonic machining contains fine particles of
  13. Which of the following statement is correct about nose radius?
  14. For turning small taper on long workpiece, the suitable method is
  15. Hardness of steel greatly improves with
  16. The height of each tooth of a broach is
  17. The cutting speed for counter-boring should be _________ that of drilling operation.
  18. The soft grade grinding wheels are denoted by the letters
  19. A jig is defined as a device which
  20. Allowance in limits and fits refers to
  21. Which among the NC operations given below are continuous path operations? Arc Welding (AW), Drilling…
  22. The cutting tool in a milling machine is mounted on
  23. Broaching is applied for machining
  24. Chip breakers are used to
  25. The angle formed by the leading edge of the land with a plane having the axis of the drill, is called
  26. The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from
  27. The guideways are of
  28. A better machinable metal is one which gives
  29. Ceramic cutting tools are
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