GATE ME 2003 | Fatigue Strength Question 13 | Machine Design

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GATE ME 2003

MCQ (Single Correct Answer)

-0.3

The $$S$$-$$N$$ curve for steel becomes asymptotic nearly at

$${10^3}\,$$ cycles

$${10^4}\,$$ cycles

$${10^6}\,$$ cycles

$${10^9}\,$$ cycles

GATE ME 2002

MCQ (Single Correct Answer)

-0.3

A static load is mounted at the center of a shaft rotating at uniform angular velocity. This shaft will be designed for

the maximum compressive stress (static)

the maximum tensile (static)

the maximum bending moment (static)

fatigue loading

GATE ME 1993

MCQ (Single Correct Answer)

-0.3

The yield strength of a steel shaft is twice its endurance limit. Which of the following torque fluctuations represent the most critical situation according to Soderberg criterion?

$$-T$$ to $$+T$$

$$-T/2$$ to $$+T$$

$$0$$ to $$+T$$

$$+T/2$$ to $$+T$$

GATE ME 1992

MCQ (Single Correct Answer)

-0.3

Fatigue strength of a rod subjected to cyclic axial force is less than that of a rotating beam of the same dimensions subjected to steady lateral force because

axial stiffness is less than bending stiffness

of absence of centrifugal effects in the rod

the number of discontinuities vulnerable to fatigue are more in the rod

at a particular time the rod has only one type of stress whereas the beam has both the tensile and compressive stresses

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