Coaxing is the procedure of increasing__________________? A. metal strength by cycling B. metal hardness by surface treatment C. metal resistance to corrosion by coatingD. fatigue limit by overstressing the metal by successively increasing loadings E. none of the above
The notch angle of the Izod impact test specimen is________________? A. 10° B. 20° C. 30°D. 45° E. 60°.
In testing a material for endurance strength, it is subjected to_______________________? A. static load B. dynamic load C. impact load D. static as well as dynamic loadE. completely reversed load
In Vicker’s hardness testing, the pyramid indentor apex is__________________? A. 40° B. 122°C. 136° D. 152° E. 161°.
If a material fails below its yield point, failure would be due to___________________? A. strainingB. fatigue C. creep D. sudden loading E. impact loading
Stress concentration in cyclic loading is____________________? Which is correct statement ? A. very serious in brittle materials and less serious in ductile materials B. very serious in ductile materials and less serious in brittle materialsC. equally serious in both types…
Stress concentration in static loading is_________________? Which is correct statement ? A. very serious in brittle materials and less serious in ductile materials B. very serious in ductile materials and less serious in brittle materials C. equally serious in both…
Which of the following is not correct procedure to increase the fatigue limit_______________? A. cold working B. shot peeningC. surface decarburisation D. under-stressing E. all of the above
Endurance limit or fatigue limit is the maximum stress that a member can withstand for an infinite number of load applications without failure when subjected to________________? A. dynamic loading B. static loading C. combined static and dynamic loadingD. completely reversed…
Stress concentration in static loading is more serious in__________________? A. ductile materialsB. brittle materials C. equally serious in both cases D. depends on other factors E. unpredictable