1

GATE PI 2004

MCQ (Single Correct Answer)

+2

-0.6

Two identical cylindrical jobs are turned using (a) a round nosed tool of nose radius $$2$$ $$mm$$ and (b) a sharp corner tool having principal cutting edge angle $$ = {45^ \circ }$$ and auxiliary cutting edge angle $$ = {10^ \circ }$$. If the operation is carried out at a feed of $$0.08$$ $$mm/rev,$$ the heights of micro irregularities on the machined surfaces (in $$mm$$) in the two cases will be

2

GATE PI 2004

MCQ (Single Correct Answer)

+1

-0.3

The cutting portion of a drill is to be welded to its shank. The process best suited for this is

3

GATE PI 2004

MCQ (Single Correct Answer)

+2

-0.6

A job of the shape shown in the figure below is to be machined on a lathe. The tool best suited for machining of this job must have

4

GATE PI 2004

MCQ (Single Correct Answer)

+2

-0.6

A non standard thread of pitch $$3.175$$ $$mm$$ is to be cut on a lathe having lead screw of pitch $$6$$ $$mm.$$ A change gear set provided with the lathe has one gear each with the following number of teeth: $$20, 30, 40, 50, 60, 70, 80,$$ $$90, 100, 110, 120, 127.$$ The correct pairs of change gears $$\left( {a/b\,\,x\,\,c/d} \right)$$ for machining the given thread are (assuming that the transmission ratio of the rest of the kinematic train between the lathe spindle and lead screw is equal to

Paper analysis

Total Questions

Casting

2

Joining of Materials

2

Machine Tools and Machining

11

Metal Forming

5

Metrology

1

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