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Manufacturing And Production Technology

Manufacturing And Production Technology
In drilling aluminium, a drill with

Zero helix angle is used
Any helix angle can be used
High helix angle is used
Low helix angle is used

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Manufacturing And Production Technology
The helix angle of a drill is ___ for drilling brass.

More than 30°
None of the listed here
Equal to 30°
Less than 30°

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Manufacturing And Production Technology
In machining metals, surface roughness is due to

Cutting tool vibrations
All of these
Feed marks or ridges left by the cutting tool
Fragment of built-up edge on the machined surface

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Manufacturing And Production Technology
In machining metals, chips break due to __________ of work material.

Ductility
Toughness
Elasticity
Work hardening

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Manufacturing And Production Technology
Misrun is a casting defect which occurs due to

Absorption of gases by the liquid metal
Improper alignment of the mould flasks
Very high pouring temperature of the metal
Insufficient fluidity of the molten metal

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Manufacturing And Production Technology
Which of the following operations can be performed with milling cutters?

Cutting teeth of spur gears
Cutting key ways on shafts
All of these
Cutting external screw threads

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