nolicv and 16.(2) Loads and stress temporal characterizations include a. concent
ID: 1867618 • Letter: N
Question
nolicv and 16.(2) Loads and stress temporal characterizations include a. concentrated b. cyclic c. distributed ng e. none of these 17. (2) Fatigue cracks are likely to occur at a. mis-matched grease holes b. sharp corners c. keyways d. stamp marks e. all of these 18. (2) load line of pure torque lies inqadrant of stress envelope diagranm a. first b. third c. fourth d. none of these 19. (2) fatigue endurance limit of a material a. b. c. d. e. depends on material yield strength decreases with poor surface conditions increases as ultimate strength decreases all of these none of these 20. (2) theory states "Failure occurs in a multi-axial state of stress when the maximum principal normal stress becomes equal to or exceeds the maximum normal stress at the time of failure in a simple uniaxial test using a specimen of the same material" a. Von Mises b. Rankine C. R.R. Moore d. Tresca-Guest e. Distortion Energy 21. (2) Stress at any point is characterized byindependent tensor stress quantities a, 9 b. 12 c. 15 d. 6 e. None of these 22. (2) Vibration and mis-alignment engineering analysis assumes a. Each effect linearly related to load that produces it b. load does not affect result of another load c. all loads satisfy same boundary conditions d. deformations are small e. all of theseExplanation / Answer
16.(A) because every test is done on the principle of unversal testing machine
17.(C) because fatigue failures are due to cyclic loading varying on both positive and negative sides
18.(A) because it follows like the engineering stress curve, as we can get an analogy by seeing that curve
19.(B) because the corrected endurance strength is multiplied of surface finish factor to get actual endurance strength
20.(B) it is a factual statement of Rankine's theory
21.(A) all the shear and normal stresses on all phases are taken
22.(A) because amplitude and stiffness are directly proportional
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