1

GATE PI 2004

MCQ (Single Correct Answer)

+2

-0.6

A hole of $$40$$ $$mm$$ diameter is pierced in a steel sheet of $$4$$ $$mm$$ thickness without shear on the tool. Shear strength of steel is $$400$$ $$N/m{m^2},$$ and penetration is $$25\% .$$ What is the expected percentage load reduction if a shear of $$1$$ $$mm$$ is provided on the punch?

2

GATE PI 2004

MCQ (Single Correct Answer)

+2

-0.6

Determine the load required to punch a $$20$$ $$mm$$ diameter hole in $$2$$ $$mm$$ thick sheet. The properties of the material of the sheet are:

Tensile strength $$-580$$ $$MPa;$$

Yield strength in tension $$-410$$ $$MPa$$

Shear strength $$-350$$ $$MPa;$$

Yield strength in shear $$-250$$ $$MPa$$

Tensile strength $$-580$$ $$MPa;$$

Yield strength in tension $$-410$$ $$MPa$$

Shear strength $$-350$$ $$MPa;$$

Yield strength in shear $$-250$$ $$MPa$$

The load in $$kN$$ is:

3

GATE PI 2004

MCQ (Single Correct Answer)

+2

-0.6

In deep drawing of sheet metal, spring loaded stripper clamps the work until:

4

GATE PI 2004

MCQ (Single Correct Answer)

+2

-0.6

In an interchangeable assembly, a shaft of $${20.00^{\matrix{
{ - 0.015} \cr
{ - 0.005} \cr
} }}\,\,mm$$ diameter and a hole of $${20.00^{\matrix{
{ - 0.025} \cr
{ - 0.010} \cr
} }}\,\,mm$$ diameter form a mating pair. In the worst assembly conditions, the clearance between them will be

Paper analysis

Total Questions

Casting

2

Joining of Materials

2

Machine Tools and Machining

11

Metal Forming

5

Metrology

1

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