SSC-JE - ME : Technical Quiz-9

In ECM, the material removal is due to

A body of mass 10 kg is moving with velocity of 15 ms⁻¹. Force required to stop it in 5 seconds should be______.

The velocity of flow field is V =2xyi-x²z²j . What is the vorticity vector at (1,2,1)?

Solution

Match the following:

In case of a ball-bearing, rating load is 110 kN. What will be the approximate rating life (in million revolutions) of the bearing at a load of 9.8 kN?

The ratio of torque carrying capacity of solid shaft to that of hollow shaft of same material and of outer diameter equal to diameter of solid shaft is:

Where,

D_i = inner diameter of hollow shaft

D_o = outer diameter of hollow shaft

and τ_max = Permissible shear stress for shaft material

Atkinson cycle consists of

The ratio of the diameter of rivet hole to the pitch of rivet is 0.25, then the tearing efficiency of the joint is