Production Engineer Question:
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When the cutting edge of the tool is dull, then during machining:

A. continuous chips are formed
B. discontinuous chips are formed
C. continuous chips with built-up edge are formed
D. no chips are formed

Answer:

C. continuous chips with built-up edge are formed

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A round nose tool may be fed either from left to right end or from right to left end of the lathe bed.
A. Yes
B. No		Internal gears can be made by:

A. hobbing
B. shaping with pinion cutter
C. shaping with rack cutter
D. milling