1

GATE PI 2008

MCQ (Single Correct Answer)

+2

-0.6

Which pair among the following solid state welding processes uses heat from an external source

$$P$$- Diffusion welding

$$Q$$- Friction welding

$$R$$- Ultrasonic welding

$$S$$- Forge welding

$$P$$- Diffusion welding

$$Q$$- Friction welding

$$R$$- Ultrasonic welding

$$S$$- Forge welding

2

GATE PI 2008

MCQ (Single Correct Answer)

+1

-0.3

Diamond cutting tools are not recommended for machining of ferrous metals to

3

GATE PI 2008

MCQ (Single Correct Answer)

+2

-0.6

In an orthogonal cutting experiment, an $$HSS$$ tool having the following tool signature in the orthogonal reference system $$(ORS)$$ has been used: $$0-10-7-7-10-75-1$$

Given : Width of cut $$=3.6mm;$$

Shear strength of work piece material $$460N/m{m^2};$$

Depth of cut $$=0.25mm;$$

Coefficient of friction at chip tool interface $$=0.7.$$

Given : Width of cut $$=3.6mm;$$

Shear strength of work piece material $$460N/m{m^2};$$

Depth of cut $$=0.25mm;$$

Coefficient of friction at chip tool interface $$=0.7.$$

Shear plane angle (in degrees) for minimum cutting force is

4

GATE PI 2008

MCQ (Single Correct Answer)

+2

-0.6

In an orthogonal cutting experiment, an $$HSS$$ tool having the following tool signature in the orthogonal reference system $$(ORS)$$ has been used: $$0-10-7-7-10-75-1$$

Given : Width of cut $$=3.6mm;$$

Shear strength of work piece material $$460N/m{m^2};$$

Depth of cut $$=0.25mm;$$

Coefficient of friction at chip tool interface $$=0.7.$$

Given : Width of cut $$=3.6mm;$$

Shear strength of work piece material $$460N/m{m^2};$$

Depth of cut $$=0.25mm;$$

Coefficient of friction at chip tool interface $$=0.7.$$

Minimum Power requirement (in $$KW$$) at a cutting speed of $$150m/min$$ is

Paper analysis

Total Questions

Casting

2

Engineering Mathematics

11

Fluid Mechanics

2

Joining of Materials

4

Machine Tools and Machining

9

Metal Forming

6

Metrology

2

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