MANUFACTURING AND PRODUCTION TECHNOLOGY QUIZ

Which type of motor is not used in axis or spindle drives of CNC machine tools?

Induction motor

Linear servo motor

DC servo motor

Stepper motor

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Down milling is also called

Conventional milling

Face milling

End milling

Climb milling

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In electro discharge machining, tool is made of

Brass

All of these

Copper tungsten alloy

Copper

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The effective number of lattice points in the unit cell of simple cubic, body centered cubic, and face centered cubic space lattices, respectively, are

1, 2, 4

2, 3, 4

2, 4, 4

1, 2, 2

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A lead-screw with half nuts in a lathe, free to rotate in both directions has

V-threads

Buttress threads

Whitworth threads

Acme threads

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Ultrasonic machining is best suited for

Sintered carbides

Tool steels

Glass

All of these

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The silicon carbide abrasive is chiefly used for grinding

All of these

Ceramic

Cemented carbide

Cast iron

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Twist drills are made of

Carbon steel

Stainless steel

High speed steel

Either (A) or (B)

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The depth of cut in drilling is ___ the drill diameter.

One-half

Double

One-fourth

Equal to

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The rake angle required to machine brass by high speed steel tool is

20°

100°

0°

10°

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