GATE XE 2021 Paper 1 — page 22

Questions 64–66 of 175. Imported answers require review unless explicitly marked reviewed.

A certain ceramic has a theoretical density and sintered density of 6.76 g cm

and 6.60 g cm

, respectively. The green compact has 18 volume percent porosity. For a sintered cube of side 2 cm, the required side of the cube green compact in cm is ________ (round off to 2 decimal places)

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When a metal (M) is immersed in de-aerated acid electrolyte, it polarizes anodically by 0.4 V. The M/M

exchange current density is 10

A m

and Tafel slope is 0.1 V/decade for the anodic reaction. Assume that corrosion is uniform and, anodic and cathodic reactions are under activation control. The rate of metal dissolution in A m

is ________ (round off to 1 decimal place)

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A force F = 40 kN is applied on the hook as shown. The equivalent force-couple system at B is

Diagram for Engineering Sciences question 1

Your answerChoose one option.

40 kN in +y direction and M = 0

40 kN in −y direction and M = 0

40 kN in +y direction and M = 400 Nm counter clockwise

40 kN in −y direction and M = 400 Nm clockwise

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2021 · Paper 1

Question 21

Question 22

Question 1