ExamVeda
Login
Home

A shaft is subjected to a maximum bending stress of 80...

This question belongs to Mechanical Engineering Machine Design
Machine Design
?

A shaft is subjected to a maximum bending stress of 80 N/mm2 and maximum shearing stress equal to 30 N/mm2 at a particular section. If the yield point in tension of the material is 280 N/mm2 and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

Answer & Solution
Correct Answer: Option B
Let's discuss the solution. Join the discussion
Examveda
Question posted by Examveda
Community

Join the Discussion

6 Comments
Abdullah
Abdullah 5 years ago
For maximum shear stress = √(sigma b)² + 4(tou)²
= √ 80² + 4(30)² = 100
So Factor Of safety = Yield stress/working stress
=280N/mm²/100N/mm²
=2.8
Sumeet Sadawarti
Sumeet Sadawarti 5 years ago
Which one is correct ?
Viddesh Gharat
Viddesh Gharat 6 years ago
F. O. S = yield stress / bending stress
= 280/80
= 7/2
= 3.5
Aruth Mari
Aruth Mari 6 years ago
stress 1 = √ 80^2 + (4*30^2) = 100
max shear stress = 100-0/2 = 50
50 = 280/ 2*Fos
2.8
Saurabh Kumar
Saurabh Kumar 6 years ago
I think ans should be (d) 3.5
(80-0)/2 = 280/(2*F.S)
Managobinda Sahoo
Managobinda Sahoo 7 years ago
Please give the procedure
Keep Learning

Related Questions on Machine Design

A cotter joint is used to connect two __________ rods.
A. Co-axial B. Perpendicular C. Parallel D. None of these
The rated life of a bearing varies
A. Directly as load B. Inversely as square of load C. Inversely as cube of load D. Inversely as fourth power of load
The bending stress in a curved beam is
A. Zero at the centroidal axis B. Zero at the point other than centroidal axis C. Maximum at the neutral axis D. None of these
The centre to centre distance between two consecutive rivets in a row, is called
A. Margin B. Pitch C. Back pitch D. Diagonal pitch
More Related Questions on Machine Design