1

GATE PI 2009

MCQ (Single Correct Answer)

+2

-0.6

A titanium sheet of $$5.0mm$$ thickness is cut by wire cut $$EDM$$ process using a wire of $$1.0mm$$ diameter. A uniform spark gap of $$0.5mm$$ on both sides of the wire is maintained during cutting operation. If the feed rate of the wire into the sheet is $$20mm/min,$$ the material removal rate (in $$m{m^3}/\min $$) will be

2

GATE PI 2009

MCQ (Single Correct Answer)

+1

-0.3

Anisotropy in rolled components is caused by

3

GATE PI 2009

MCQ (Single Correct Answer)

+2

-0.6

Using direct extrusion process, a round billet of $$100$$ $$mm$$ length and $$50mm$$ diameter is extruded. Considering an ideal deformation process (no friction and no redundant work), extrusion ratio $$4$$ and average flow stress of material $$300$$ $$MPa,$$ the pressure $$(MPa)$$ on the $$ram$$ will be

4

GATE PI 2009

MCQ (Single Correct Answer)

+2

-0.6

A disc of $$200$$ $$mm$$ diameter is blanked from a strip of an aluminium alloy of thickness $$3.2$$ $$mm.$$ The material shear strength to fracture is $$150$$ $$MPa.$$ The blanking force (in $$kN$$) is

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Total Questions

Casting

2

Engineering Mathematics

7

Fluid Mechanics

2

Heat Transfer

1

Joining of Materials

3

Machine Tools and Machining

6

Metal Forming

3

Metrology

2

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