Related Questions

The yield point in fatigue loading compared to that in static loading is less. The ratio of ultimate tensile strength to endurance limit of a material subjected to fatigue loading is
A 0.5
B 1
C 1.5
D 2
Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the
A Ultimate tensile strength (U.T.S.)
B Endurance limit
C Elastic limit
D None of these
Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails
A Below the yield point
B Above the yield point
C Below the elastic limit
D At the elastic limit
__________ can not increase the fatigue strength of a material.
A Grain refining
B Grain coarsening
C Surface hardening
D Shot peening
Endurance is a measure of fatigue limit of a metal. Fatigue crack in nitrided machine parts originates
A At the surface
B Within the core
C Just below the surface
D Anywhere on the surface
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is
A 0.20
B 0.35
C 0.50
D 0.65
Mechanism/phenomenon involved in the improvement of fatigue strength of a material by shot peening is the
A Induction of residual compressive stress on the surface
B Removal of stress concentration from the surface
C Grain refinement
D Surface polishing
Fatigue strength of a material increases by
A Having notches in the specimen
B Rise in temperature
C Under stressing the specimen
D Having scratches on the surface
If the size of a standard specimen for a fatigue testing machine is increased, the endurance limit for the material will
A Have same value as that of standard specimen
B Increase
C Decrease
D None of these
In what ratio must a mixture of 11% sugar strength be mixed with that of 25% sugar strength so as to get a new mixture of 13% sugar strength?
A 5:1
B 6:1
C 7:2
D 10:3

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