Production Engineering - Mechanical Engineering Questions and Answers

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As the cutting speed increases, tool life decreases.

Yes

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In metal machining, the work-tool contact zone is a zone where heat is generated due to

plastic deformation of metal

burnishing friction

friction between the moving chip and the tool face

none of the above

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Thread grinding requires work speed from

1 to 3 m/min

5 to 10 m/min

10 to 14 m/min

14 to 20 m/min

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Threading is an operation of

smoothing and squaring the surface around a hole

sizing and finishing a small diameter hole

producing a hole by removing metal along the circumference of a hollow cutting tool

cutting helical grooves on the external cylindrical surface

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Glazing in grinding wheels can be decreased by

using a harder wheel or by increasing the wheel speed

using a softer wheel or by decreasing the wheel speed

using a harder wheel or by decreasing the wheel speed

using a softer wheel or by increasing the wheel speed

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The cutting speed is minimum while machining __________ with a high speed steel tool.

cast iron

mild steel

brass

aluminium

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A process of removing metal by pushing or pulling a cutting tool is called

up milling

down milling

forming

broaching

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The hardness of a grinding wheel is specified by

Brinell hardness number

Rockwel! hardness number

Vickers pyramid number

letter of alphabet

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Which of the following operations can be performed with milling cutters?

cutting key ways on shafts

cutting external screw threads

cutting teeth of spur gears

all of these