Q1: Choose the correct answer for the following questions: 1_ Failure due to excessive deformation is controlled by(a) Material properties (b) Design & Dimensions (c) Both (d) None 2 Failure due to excessive deformation is controlled by (a) Yield strength (b) Tensile strength (c) Young's modulus (d) All 3_time dependent yield is known as. (a) Fracture (b) Fatigue (c) Buckling (d) Creep 4. Brittle fracture is more dangerous than ductile fracture because (a) No warning sign (b) Crack propagates at very high speeds (c) No need for extra stress during crack propagation 5_fracture voids usually form at (a) Inclusions (b) Second phase particles (c) Grain boundary triple points (d) All 6_fracture stress (a) is proportional to (a) crack length (b) 1/crack length (c) (crack length)(crack length) 7_racture toughness is measured in terms of (a) Strain energy release rate (b) Stress concentration factor (c) Both (d) None 8_In fracture mode-11, fracture surfaces...

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
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Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.2P: 5.2 Evaluate the Prandtl number from the following data: , .
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Q1: Choose the correct answer for the following questions:
1_ Failure due to excessive deformation is controlled by(a) Material properties (b)
Design & Dimensions (c) Both (d) None
2_Failure due to excessive deformation is controlled by
(a) Yield strength (b) Tensile strength (c) Young's modulus (d) All
3 time dependent yield is known as..
(a) Fracture (b) Fatigue (c) Buckling (d) Creep
4. Brittle fracture is more dangerous than ductile fracture because
(a) No warning sign (b) Crack propagates at very high speeds (c) No need for extra
stress during crack propagation
5_fracture voids usually form at
(a) Inclusions (b) Second phase particles (c) Grain boundary triple points (d) All
6 fracture stress
(a) is proportional to (a) crack length (b) 1/crack length (c) (crack length)(crack
length)
7_racture toughness is measured in terms of
(a) Strain energy release rate (b) Stress concentration factor (c) Both (d) None
8_In fracture mode-11, fracture surfaces...
(a) shear parallel to edge of crack (b) shear perpendicular to edge of crack (c)
displace normal to each other
9_fracture toughness, Kic, decreases with..
(a) increasing temperature (b) increasing strain rate (c) increase in yield strength (d)
incr
grain size(d) None
10 lf the surface crack causing fracture in a brittle material is made twice as deep,
the fracture strength will..
(a) decrease by a factor of V2 (b) decreases by a factor of 2 (c) decrease by a factor
of 2 (d) No change Q2: A material containing cracks of initial length 0.01 mm is
subjected to alternating tensile stresses
Transcribed Image Text:Q1: Choose the correct answer for the following questions: 1_ Failure due to excessive deformation is controlled by(a) Material properties (b) Design & Dimensions (c) Both (d) None 2_Failure due to excessive deformation is controlled by (a) Yield strength (b) Tensile strength (c) Young's modulus (d) All 3 time dependent yield is known as.. (a) Fracture (b) Fatigue (c) Buckling (d) Creep 4. Brittle fracture is more dangerous than ductile fracture because (a) No warning sign (b) Crack propagates at very high speeds (c) No need for extra stress during crack propagation 5_fracture voids usually form at (a) Inclusions (b) Second phase particles (c) Grain boundary triple points (d) All 6 fracture stress (a) is proportional to (a) crack length (b) 1/crack length (c) (crack length)(crack length) 7_racture toughness is measured in terms of (a) Strain energy release rate (b) Stress concentration factor (c) Both (d) None 8_In fracture mode-11, fracture surfaces... (a) shear parallel to edge of crack (b) shear perpendicular to edge of crack (c) displace normal to each other 9_fracture toughness, Kic, decreases with.. (a) increasing temperature (b) increasing strain rate (c) increase in yield strength (d) incr grain size(d) None 10 lf the surface crack causing fracture in a brittle material is made twice as deep, the fracture strength will.. (a) decrease by a factor of V2 (b) decreases by a factor of 2 (c) decrease by a factor of 2 (d) No change Q2: A material containing cracks of initial length 0.01 mm is subjected to alternating tensile stresses
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