GATE MT purpose:exam-prep PYQs & Answers — Page 29

Questions 281–290 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 29 of 65

Which one of the following figures illustrates a lap joint with fillet weld?

Diagram for Metallurgical Engineering question 21

Your answerChoose one option.

III

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The CCT diagram of a eutectoid steel with a superposed cooling curve is shown in the figure. The microstructure at room temperature (RT) after this heat treatment is ____________

Diagram for Metallurgical Engineering question 22

Your answerChoose one option.

pearlite only

pearlite + retained austenite

martensite only

pearlite + martensite

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Given that

is a closed volume in space bounded by the surface

with unit normal

. If

is any non-zero vector and

is the gradient operator, then the volume integral

is equal to the surface integral

by value of __________

Your answerChoose one option.

Stokes Curl theorem

Reynolds transport theorem

Buckingham Pi theorem

Gauss divergence theorem

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In green sand molding, the casting defect resulting from the displacement of mould cavity by an oversized core is known as ________

Your answerChoose one option.

crush

hot tear

blow

fin

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Which one of the following modern practices is used for retarding the solution loss reaction in blast furnace ironmaking?

Your answerChoose one option.

High top pressure

Bell-less top

Pulverized coal injection

Rotating chute for burden distribution

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For a material that undergoes strain hardening, necking instability occurs during tensile testing when __________

Given:

= true stress and

= true strain.

Your answerChoose one option.

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Match the processes (Column I) with the corresponding defects (Column II).

Column I: (P) Extrusion (Q) Deep drawing (R) Forging (S) Rolling

Column II: (1) Earing (2) Cold shut (3) Edge cracking (4) Fir-tree cracking

Your answerChoose one option.

P – 1, Q – 4, R – 2, S – 3

P – 2, Q – 1, R – 4, S – 3

P – 4, Q – 1, R – 3, S – 2

P – 4, Q – 1, R – 2, S – 3

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With increase in carbon content (up to 2 mass%) in Fe-C alloy, which one of the following statements is correct with respect to the lattice parameters (

and

) of BCT martensite?

Your answerChoose one option.

Both

and

increase

increases but

decreases

decreases but

increases

Both

and

decrease

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With reference to the stress intensity factor, find the correct match of nomenclature (Column A) with the mode of deformation applied to the crack (Column B).

Column A: (P) Mode I (Q) Mode II (R) Mode III

Column B: (X) Forward shear mode (Y) Parallel shear mode (Z) Crack opening mode

Your answerChoose one option.

P – Z, Q – Y, R – X

P – Z, Q – X, R – Y

P – Y, Q – X, R – Z

P – Y, Q – Z, R – X

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In continuous casting of steel, mould flux is used for _______

Your answerSelect all correct options. You can choose more than one.

lubrication

reducing heat loss

inclusion control

reducing solidification shrinkage

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GATE MT purpose:exam-prep PYQs

Question 21

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Question 25

Question 26

Question 27

Question 28

Question 29

Question 30