Machine Design
Bolted Riveted and Welded Joints
Marks 1Marks 2
Design For Static Loading
Marks 1Marks 2
Design of Brakes and Clutches
Marks 1Marks 2
Design of Spur Gears
Marks 1Marks 2
Design of Bearings
Marks 1Marks 2
Fatigue Strength
Marks 1Marks 2
1
GATE ME 2025
MCQ (Single Correct Answer)
+2
-0.67

The endurance limit of a specific grade of steel is same as its yield strength. The ultimate strength of this grade of steel is twice of its yield strength. A component made of this steel is loaded in tension and unloaded periodically. It is required that the component does NOT fail for at least $10^6$ loading cycles, as per the Soderberg law. Considering a factor of safety of 2 , the maximum applied tensile principal stress is

A
one-fourth of the endurance limit
B
half of the endurance limit
C
the endurance limit
D
twice the endurance limit
2
GATE ME 2017 Set 1
Numerical
+2
-0
A machine element has an ultimate strength $$\left( {{\sigma _u}} \right)$$ of $$600\,\,N/m{m^2},$$ and endurance limit $$250$$ $$\,N/m{m^2}.$$ The fatigue curve for the element on log-log plot is shown below. If the element is to be designed for a finite of $$10000$$ cycles, the maximum amplitude of a completely reversed operating stress is _________ $$\,N/m{m^2}.$$ GATE ME 2017 Set 1 Machine Design - Fatigue Strength Question 5 English
Your input ____
3
GATE ME 2016 Set 2
MCQ (Single Correct Answer)
+2
-0.6
In a structural member under fatigue loading, the minimum and maximum stresses developed at the critical point are $$50$$ $$MPa$$ and $$150$$ $$MPa,$$ respectively. The endurance, yield, and the ultimate strengths of the material are $$200$$ $$MPa,$$ $$300$$ $$MPa$$ and $$400$$ $$MPa,$$ respectively. The factor of safety using modified Goodman criterion is
A
$${3 \over 2}$$
B
$${8 \over 5}$$
C
$${12 \over 7}$$
D
$$2$$
4
GATE ME 2013
MCQ (Single Correct Answer)
+2
-0.6
A bar is subjected to fluctuating tensile load from $$20$$ $$kN$$ to $$100$$ $$kN.$$ The material has yield strength of $$240$$ $$MPa$$ and endurance limit in reversed bending is $$160$$ $$MPa.$$ According to the Soderberg principle, the area of cross-section in $$m{m^2}$$ of the bar for a factor of safety of $$2$$ is
A
$$400$$
B
$$600$$
C
$$750$$
D
$$1000$$
GATE ME Subjects
Engineering Mechanics
Machine Design
Strength of Materials
Heat Transfer
Production Engineering
Industrial Engineering
Turbo Machinery
Theory of Machines
Engineering Mathematics
Fluid Mechanics
Thermodynamics
General Aptitude