1

GATE PI 2005

MCQ (Single Correct Answer)

+2

-0.6

**Assertion (A) :**Cold working of metals result in increase of strength and hardness.

**Reason (R) :**Cold working reduces the total number of dislocations per unit volume of the material.

2

GATE PI 2005

MCQ (Single Correct Answer)

+2

-0.6

Consider the following statements:

In comparison to hot working, in cold working,

$$1.$$ Higher forces are required

$$2.$$ No heating is required

$$3.$$ Less ductility is required

$$4.$$ Better surface finish is obtained.

In comparison to hot working, in cold working,

$$1.$$ Higher forces are required

$$2.$$ No heating is required

$$3.$$ Less ductility is required

$$4.$$ Better surface finish is obtained.

Which of the statements given above are correct?

3

GATE PI 2005

MCQ (Single Correct Answer)

+2

-0.6

A $$\phi \,\,25$$ $$mm$$ hole is pierced in a $$t=2.5mm$$ thick steel sheet having shear strength $$\tau = 350\,\,MPa.$$ If the diametral clearance is given by the expression $$C=0.0064$$ $$t$$ $$\sqrt \tau ,$$ the die diameter (in $$mm$$), punch diameter (in $$mm$$) and punch force in $$(kN)$$ respectively are

4

GATE PI 2005

MCQ (Single Correct Answer)

+1

-0.3

Ring gage is used to measure

Paper analysis

Total Questions

Casting

3

Engineering Mathematics

9

Heat Transfer

1

Joining of Materials

5

Machine Tools and Machining

21

Metal Forming

8

Metrology

2

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