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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

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  1. Discontinuous chips are formed during machining of
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  3. The broaching operation in which either the work or the tool moves across the other, is known as
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  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
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  8. What is the type of welding defect is caused due to stresses on heating and cooling called?
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  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
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  21. Which among the NC operations given below are continuous path operations? Arc Welding (AW), Drilling…
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  26. The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from
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  28. A better machinable metal is one which gives
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