SSC JE Mechanical Engineering 24th Jan 2018 Shift-1
For the following questions answer them individually
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 151
......... surface hardening process gives maximum hardness to the surface.
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 152
........... is not a ceramic material
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 153
To which of the following is the proof stress related?
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 154
Mechanical seals are used
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 155
Noise level in case ofan aircraft is
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 156
The tool life of a tool is said to be over if
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 157
Graphite moulds are generally used for continuous casting method because
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 158
Ceramic tools are fixed to tool by the following process
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 159
Gear tooth Vernier is used
SSC JE Mechanical Engineering 24th Jan 2018 Shift-1 - Question 160
If $$\alpha$$ is the rake angle of the cutting tool, $$\psi$$ is the shear angle and $$v$$ is the cutting velocity, then the velocity of chip sliding along the shear plane is given by
1] $$\frac{v \cos \alpha}{\sin(\psi - \alpha)}$$
2] $$\frac{v \sin \alpha}{\sin(\psi - \alpha)}$$
3] $$\frac{v \sin \alpha}{\cos(\psi - \alpha)}$$
4] $$\frac{v \cos \alpha}{\cos(\psi - \alpha)}$$
