1
GATE ME 1993
MCQ (Single Correct Answer)
+1
-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?
A
$$-T$$ to $$+T$$
B
$$-T/2$$ to $$+T$$
C
$$0$$ to $$+T$$
D
$$+T/2$$ to $$+T$$
2
GATE ME 1992
MCQ (Single Correct Answer)
+1
-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
A
axial stiffness is less than bending stiffness
B
of absence of centrifugal effects in the rod
C
the number of discontinuities vulnerable to fatigue are more in the rod
D
at a particular time the rod has only one type of stress whereas the beam has both the tensile and compressive stresses
3
GATE ME 1991
Fill in the Blanks
+1
-0
In a shaft with a transverse hole, as the hole to the shaft diameter ratio ___________ (increases / decreases), the torsional stress concentration factor__________ (increases/decreases)
4
GATE ME 1990
MCQ (Single Correct Answer)
+1
-0.3
The process of shot peening increases the fatigue life of steel springs mainly because it results in
A
surface hardening
B
increased stiffness of the material
C
structural changes in the material
D
residual compression at the surface
GATE ME Subjects
Turbo Machinery
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12