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
0
2.07
20.7
41.4
- Discontinuous chips are formed during machining of
- Which of the following engineering materials is the most suitable candidate for hot chamber die casting?
- The broaching operation in which either the work or the tool moves across the other, is known as
- In _________ operation, the chip thickness is minimum at the beginning of the cut and it reaches to…
- The correct sequence of tool materials in increasing order of their ability to retain their hot hardness…
- The chamfering is an essential operation after
- A set of eight form relieved milling cutters for each module is provided to enable cutting of gears…
- What is the type of welding defect is caused due to stresses on heating and cooling called?
- Which of the following operation is first performed?
- In a particular type of welding, flux is prepared in the form of a coarse powder and granulated flux…
- The hard grade grinding wheels are denoted by the letters
- The abrasive slurry used in ultrasonic machining contains fine particles of
- Which of the following statement is correct about nose radius?
- For turning small taper on long workpiece, the suitable method is
- Hardness of steel greatly improves with
- The height of each tooth of a broach is
- The cutting speed for counter-boring should be _________ that of drilling operation.
- The soft grade grinding wheels are denoted by the letters
- A jig is defined as a device which
- Allowance in limits and fits refers to
- Which among the NC operations given below are continuous path operations? Arc Welding (AW), Drilling…
- The cutting tool in a milling machine is mounted on
- Broaching is applied for machining
- Chip breakers are used to
- The angle formed by the leading edge of the land with a plane having the axis of the drill, is called
- The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from
- The guideways are of
- A better machinable metal is one which gives
- Ceramic cutting tools are
- A right hand tool on a lathe cuts most efficiently when it travels