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Manufacturing And Production Technology

Manufacturing And Production Technology
The silicon carbide abrasive is chiefly used for grinding

Ceramic
Cemented carbide
Cast iron
All of these

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Manufacturing And Production Technology
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)

Vn/T = C
VnT = C
V/Tn = C
VTn = C

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Manufacturing And Production Technology
In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25, if the cutting speed is halved, then tool life will become

Half
Two times
Eight times
Sixteen times

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Manufacturing And Production Technology
The actual feed in centerless grinders is given by (where d = Dia. of regulating wheel, n = Revolutions per minute, and α = Angle of inclination of wheel)

πdn sinα
πd
πdn
πdn cosα

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Manufacturing And Production Technology
What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?

Undercut
Porosity
Crack
Under fill

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Manufacturing And Production Technology
A feed gear box for a screw cutting lathe is designed on the basis of

Arithmetic progression
Harmonic progression
None of these
Geometric progression

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