GATE MT year:2023 PYQs & Answers — Page 7

Questions 61–65 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 7 of 7

The alloy A (given in the phase diagram) is cooled slowly from the liquid state to just below the eutectic temperature.

Diagram for Metallurgical Engineering question 61

The ratio of weight fractions of pro-eutectic

to eutectic

is __________ (round off to 1 decimal place).

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

In an aqueous solution of Fe

ions with concentration of

M at 298 K and atmospheric pressure, the reduction potential of Fe in volt is __________ (round off to 2 decimal places).

Given: Standard reduction potential,

Faraday’s constant, F = 96500 C per mole of electrons Universal gas constant, R = 8.314

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

Strain hardening behavior of an alloy is given by

, where

and

are true stress and true strain, respectively. The alloy is cold drawn to an unknown amount of strain, followed by tensile testing. If the tensile test showed 10 % reduction in area at maximum load, the unknown amount of strain from prior cold work is __________ (round off to 2 decimal places).

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

A specimen containing maximum initial surface crack of size 1.5 mm is subjected to cyclic loading with

and

. Assuming specimen geometric factor of 1, and referring to the given figure, the crack growth rate in

m cycle

is __________ (round off to nearest integer).

Diagram for Metallurgical Engineering question 64

Given: N = number of cycles a = crack length R = stress ratio

= stress intensity range

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

A 200 mm thick slab is rolled using 500 mm diameter rolls under cold rolling and hot rolling conditions, separately. The coefficient of friction is 0.04 in cold rolling and 0.4 in hot rolling. The ratio of maximum possible thickness reduction in cold rolling to that in hot rolling is __________ (round off to 2 decimal places).

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

GATE MT year:2023 PYQs

Question 61

Question 62

Question 63

Question 64

Question 65