MANUFACTURING AND PRODUCTION TECHNOLOGY QUIZ

It is desired to perform the operations like drilling, reaming, counter-boring etc. on a work piece. Which of the following machine will be used?

Multiple spindle drilling machine

Sensitive drilling machine

Radial drilling machine

Gang drilling machine

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In electro-discharge machining, dielectric is used to

All of these

Control the spark discharges

Help in the movement of the sparks

Act as coolant

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Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming effective resistance to be 200 μm and current flow time of 0.2 second, heat generated during the process will be

5 Joule

1000 Joule

0.2 Joule

1 Joule

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When the end of a tap is tapered for about three or four threads, it is known as a

Taper tap

None of these

Bottoming tap

Second tap

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Gear finishing operation is called

Milling

Shaping

Hobbing

Burnishing

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The size of a shaper is given by

Rate size

Mass of machine

Stroke length

Motor power

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The usual value of the point angle of a drill is

130°

100°

118°

70°

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Green sand mould indicates that

Mould has been totally dried

Mould is green in colour

Mould contains moisture

Polymeric mould has been cured

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The angle formed by the leading edge of the land with a plane having the axis of the drill, is called

Point angle

Helix or rake angle

Chisel edge angle

Lip clearance angle

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The surface finish is improved by the increase in

True rake angle

All of these

Nose radius

Cutting speed

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