Metallurgical Engineering
GATE MT topic:materials-engineering PYQs
Build your understanding with focused practice from past exam papers.
Questions 31–40 of 650. Imported answers require independent review unless marked reviewed.
Question 31
Open questionMTMSQ1 markNeeds review
Which of the following elements, when present in iron, enhance(s) its corrosion resistance?
Your answerSelect all correct options. You can choose more than one.
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Open questionMTNAT1 markNeeds review
Value of scalar triple product
is (answer in integer) ____________.
Here,
,
and
are mutually orthogonal unit vectors.Log in to check the answer
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Open questionMTNAT1 markNeeds review
A box contains 20 thermometers, 3 of which are defective. One person randomly draws 2 thermometers from the box, one-by-one, without replacement. The probability in percent (rounded-off to two decimal places) that none of these TWO thermometers is defective, is _________________ %.
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For an equilibrium phase diagram of a binary A-B alloy at a constant pressure as shown in the figure, the degree of freedom at ‘X’ is (answer in integer) ____________.
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Two parallel plates, with Newtonian incompressible liquid in between, are 2 mm apart. The upper plate is stationary and the lower plate moves with a velocity of 4 m/s. A force per unit area of 5 N/m² is applied parallel to the lower plate to maintain its motion. The viscosity of the liquid (rounded off to two decimal places) is ______ ×
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Open questionMTMCQ2 marksNeeds review
Match the crystal systems in Column I with the corresponding axial lengths (a, b, c) and interaxial angles (α, β, γ) provided in Column II
Column I
(P) Tetragonal
(Q) Rhombohedral
(R) Orthorhombic
(S) Monoclinic
Column II
(1) a ≠ b ≠ c, α = β = γ = 90°
(2) a = b ≠ c, α = β = γ = 90°
(3) a ≠ b ≠ c, α = γ = 90° ≠ β
(4) a = b = c, α = β = γ ≠ 90°
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Open questionMTMCQ2 marksNeeds review
Match the concepts listed in Column I with the associated terms listed in Column II
Column I
(P) Paris Law
(Q) Schmid Factor
(R) Larson-Miller Parameter
(S) Portevin - Le Chatelier Effect
Column II
(1) Creep
(2) Fatigue
(3) Dynamic Strain Aging
(4) Critical Resolved Shear Stress
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Open questionMTMCQ2 marksNeeds review
Match the type of defects in Column I with the corresponding metal manufacturing processes listed in Column II:
Column I
(P) Edge Cracking
(Q) Flashline Cracking
(R) Chevron Cracking
(S) Cracked Core
Column II
(1) Casting
(2) Forging
(3) Rolling
(4) Extrusion
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Open questionMTMCQ2 marksNeeds review
Match the descriptions listed in Column I with the corresponding non-destructive testing methods listed in Column II:
Column I
(P) Internal flaws in railroad wheel
(Q) In-service monitoring of crack
(R) Inclusion in mild steel
(S) Surface crack in Al-based alloy
Column II
(1) Ultrasonic
(2) Radiography
(3) Dye Penetrant
(4) Acoustic Emission
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Open questionMTMCQ2 marksNeeds review
The equation below represents a steady-state laminar flow of a fluid through a horizontal tube:
is fluid pressure
is dynamic viscosity
: coordinates of cylindrical polar system, and
is axial velocity in z-directionWhich one of the following statements related to the above case is NOT correct?
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