Q. The ductile materials, during machining, produce

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Q. Slow speed of the spindle is necessary in

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Q. The hole drilled for tapping should be smaller than the tap size by twice the depth of thread.

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Q. Relief angles on high speed steel tools usually vary from

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Q. It is required to cut screw threads of 2 mm pitch on a lathe. The lead screw has a pitch of 6 mm. If the spindle speed is 60 r.p.m., then the speed of lead screw will be

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Q. The tool life in case of a grinding wheel is the time

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Q. In which of the following machine, the work is usually rotated while the drill is fed into work?

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Q. In twist fluted drills, chips do not move out automatically.

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Q. Mild steel during machining produces __________ chips.

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Q. Up milling is also called conventional milling.

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Q. Fixtures are used

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Q. In ultra-sonic machining, tool is made of

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Q. Ceramic tools has greater tool life than carbide tools.

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Q. The rake angle of a single point cutting tool corresponds to __________ of a twist drill.

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Q. As the cutting speed increases, the tool cutting forces

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Q. Crater wear leads to

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Q. The addition of lead, sulphur and phosphorus to low carbon steels, help to

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Q. The relation between the tool life (T) in minutes and cutting speed (V) in m/min is (where n = An exponent, which depends upon the tool and workpiece, and C = A constant)

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Q. The width of cutting edge of a parting-off tool varies from

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Q. A tool used to withdraw a drill from the sleeve is called

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