GATE PI 2020 Paper 1 — page 18

Questions 52–54 of 65. Imported answers require review unless explicitly marked reviewed.

The figure shows drawing of a part with dimensions and tolerances, both in mm. The permissible tolerance for slot A (rounded off to one decimal place) in mm is ±__________.

Diagram for Production and Industrial Engineering question 42

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

To manufacture a product by casting, molten metal is poured in cavity of rectangular cross section in a sand mold with a side blind riser as shown in the figure. The dimensions of the mold cavity are 60 cm x 40 cm x 20 cm.

Diagram for Production and Industrial Engineering question 43

The riser is cylindrical in shape with diameter equal to height. It is required that the solidification time of the riser should be 25% greater than that of the mold. Using Chvorinov’s rule, the diameter of the riser (rounded off to one decimal place) in cm should be __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A cylindrical billet of 90 mm diameter is extruded to produce an I-section as shown in the figure (all dimensions in mm).

Diagram for Production and Industrial Engineering question 44

The total extrusion pressure (

) in MPa required for the above process is given by

where,

is the mean flow stress of the material, and

and

are the initial and the final cross-sectional areas, respectively. If the mean flow stress of the extruded material is 80 MPa, the force required for the above extrusion (rounded off to one decimal place) in kN is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

2020 · Paper 1

Question 42

Question 43

Question 44