GATE PI year:2017 PYQs & Answers — Page 3

Questions 21–30 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 3 of 7

In powder metallurgy, the process ‘atomization’ refers to a method of

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producing powders

compaction of powders

sintering of powder compacts

blending of metal powders

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The ideal stress-strain behavior for a completely brittle material during tensile testing up to failure is described by

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Diagram for Production and Industrial Engineering question 22

Diagram for Production and Industrial Engineering question 22 (figure 2)

Diagram for Production and Industrial Engineering question 22 (figure 3)

Diagram for Production and Industrial Engineering question 22 (figure 4)

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With reference to Iron-Carbon equilibrium phase diagram, the crystal structure of 0.3% plain carbon steel at 1,100 °C is

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HCP

BCT

BCC

FCC

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is the modulus of elasticity in GPa,

is the shear modulus in GPa and

is the Poisson’s ratio of a linear elastic and isotropic material, the three terms are related as

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A machined surface with standard symbols indicating the surface texture is shown in the Figure. (All dimensions in the Figure are in micrometer).

Diagram for Production and Industrial Engineering question 25

The waviness height (in micrometer) of the surface is

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120

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The improper integral

converges to

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1.0

0.5

2.0

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The local minima of the function

in the range

is located at

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Runge-Kutta fourth order method is used to solve the differential equation

. If the initial value

and step-size is 0.1, then the value of

is __________ (up to three decimal places).

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Two machines are defective in a lot of 10. A combination of four machines is to be picked at a time from the lot. The maximum number of combinations that can be obtained without any defective machine is __________

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The simply-supported beam shown in the Figure is loaded symmetrically using two equal point loads

. The radius of curvature of the deflection-curve is 15 m for the portion of the beam that is subjected to pure bending. The vertical deflection (in mm) at point M, equidistant from both the supports, is __________ (up to two decimal places).

Diagram for Production and Industrial Engineering question 30

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GATE PI year:2017 PYQs

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30