A. increases markedly
B. decreases markedly
C. remains same
D. depends on heat treatment carried out
E. none of the above

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Related Mcqs:

  1. If an unsupported uniform cross sectional elastic bar is subjected to a longitudinal impact from a rigid bob moving with velocity v, then a compressive wave of intensity sc is propagated through the bar as follows______________________?
    A. vpE B. vVvF C. WpE/2 D. IvHpE E. none of the above, where E = modulus of elasticity and p = mass density...
  2. If a load W is applied instantaneously on a bar; then the stress induced in bar will___________________?
    A. be independent of ratio of mass of load W to mass of bar (y) B. increase with increase in y C. decrease with decrease in y D. depend on other considerations E. none of the above...
  3. The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be_________________?
    A. same in both cases B. 2 times more C. 3 times more D. 4 times more E. unpredictable...
  4. In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by_________________?
    A. decreasing the cross-section area of’ bar B. increasing the cross-section area of bar C. remain unaffected with cross-section area D. would depend upon other factors E. none of the above...
  5. The property of a material which enables it to resist fracture due to high impact loads is known as__________________?
    A. elasticity B. endurance C. strength D. toughness E. resilience...
  6. The notch angle of the Izod impact test specimen is________________?
    A. 10° B. 20° C. 30° D. 45° E. 60°....
  7. Brittle coating technique is used for_________________?
    A. determining brittleness B. protecting metal against corrosion C. protecting metal against wear and tear D. experimental stress analysis E. non-destructive testing of metals...
  8. Cold working________________?
    A. increases the fatigue strength B. decreases the fatigue strength C. has no influence on fatigue strength D. alone has no influence on fatigue strength E. none of the above...
  9. If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation_______________?
    A. 102 d B. 124 d C. 138 d D. 151 d E. 168 d...
  10. When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at_______________?
    A. shank B. head C. in the middle D. at the thread E. anywhere in the bolt...
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