GATE MT purpose:exam-prep PYQs & Answers — Page 61

Questions 601–610 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 61 of 65

A brittle material (Young’s modulus = 60 GPa and surface energy = 0.5 J.m⁻²) has a surface crack of length 2 μm. The fracture strength (in MPa) of this material is __________ (answer up to two decimal places)

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

Both creep resistance and tensile strength of a metal can be enhanced by

Your answerChoose one option.

increase in the grain size

decrease in the grain size

addition of dispersoids

annealing

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

Stress required to operate a Frank-Read source of length L is approximately given by:

Your answerChoose one option.

Gb/L

Gb²/L

Gb²/L²

Gb²/(2L²)

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

The second peak in the powder X-ray diffraction pattern of a FCC metal occurs at a Bragg angle θ (in degrees) = __________ (answer up to two decimal places)

(Given: λ_CuKα = 0.154 nm; lattice parameter of the metal = 0.36 nm)

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

A rod is elastically deformed by a uniaxial stress resulting in a strain of 0.02. If the Poisson’s ratio is 0.3, the volumetric strain is __________ (answer up to three decimal places)

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

Four alloys, C1, C2, C3, C4, shown in the phase diagram are poured at temperature T₁ in a mold. During solidification, which one of these alloys is expected to have the highest fluidity?

Diagram for Metallurgical Engineering question 21

Your answerChoose one option.

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

A material, which shows power law behavior, σ̄ = 50ε̄^0.3, is being wire drawn. The maximum strain per pass in annealed condition (assume ideal work and efficiency η = 1) is __________ (answer up to two decimal places)

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

Schematic diagram shows rolling of a slab. P and Q are points on the surface of the workpiece near entrance and exit, respectively. With reference to the work piece, which one of the following statements is TRUE?

Diagram for Metallurgical Engineering question 23

Your answerChoose one option.

Frictional force is along rolling direction at both P and Q.

Frictional force is opposite to rolling direction at both P and Q.

Frictional force is along rolling direction at P and opposite to rolling direction at Q.

Frictional force is opposite to rolling direction at P and along rolling direction at Q.

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

Which one of the following manufacturing techniques is used for making window glass?

Your answerChoose one option.

Investment casting

Patenting

Spray forming

Float-bath method

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

Dye penetrant test is based on the principle of

Your answerChoose one option.

polarized sound waves in liquid.

magnetic domain.

absorption of X-rays.

capillary action.

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

GATE MT purpose:exam-prep PYQs

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25