A. Very serious in brittle materials and less serious in ductile materials
B. Very serious in ductile materials and less serious in brittle materials
C. Equally serious in both types of materials
D. Seriousness would depend on other factors
Answer: Option C
This Question Belongs to Mechanical Engineering >> 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
B is right answer
B is the right ans
Ajay I will accept your ans
Stress cocentration in static loading is less serious in dictile material But it is serious for both ductile as well as brittle material in case of cyclic loading. Stress concentration factor is used in brittle material for both static loading as well as cyclic loading.
No stress concentration is more serious in brittle material when there is static loading because of sudden plastic deformation and not able to withstand that load so, crack develops in brittle material.
But in cyclic loading its is dependent on yielding. As brittle materials do not yield it is more serious in ductile materials.
B is right answer
Option A i think right
B
For static loading-brittle material
For cyclic loading-ductile material
For static loading-brittle material
For cyclic loading-ductile material