Related Questions

Fatigue strength of a metal is improved by
A Overstressing
B Scratching the surface
C Raising the temperature
D Understressing
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
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
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
Fatigue life is expected to increase by
A increasing the size of the sample
B smooth polishing of the surface of the sample
C having compressive residual stresses at the surface
D having tensile residual stresses at the surface
The pilot of a small aircraft with a 40 gallon fuel tank wants to fly to Cleveland , which is 480 miles engine , which can fly only 8 miles per gallon, will not get him there , By how many miles per gallon must the aircraft's fuel efficiency be improved to make the fight to Cleveland possible?
A 160
B 12
C 40
D 4
[Answer the question based on what is stated or implied in the statement or passage.] With varying success, many women around the world today struggle for equal rights. Historically world today struggle for equal rights. Historically, women have achieved greater equality with men during periods of social adversity - revolution, war, and the rigours of pioneering in an underdeveloped land the essential element that improved the status of women was a shortage of men. We can conclude that-
A women today are highly successful in winning equal rights
B only pioneer women have been considered equal to men
C historically, women have only achieved equality through force
D historically, equality alone has not been enough to secure women rights
During post-transplant period, the prospect of graft acceptance can be improved by
A Irradiated blood
B Leukocyte depleted red blood cells
C Intramuscular GM -CSF infusion
D Random donor HLA identical blood
E Previous blood transfusion
Fertility of soil can be improved by ________
A Adding living earthworms
B Adding dead earthworms
C Removing dead earthworms
D Removing living earthworms and adding dead earthworms

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