Answer:
Yes this claim is correct.
Explanation:
The shear stress at any point is proportional to the velocity gradient at any that point. Since the fluid that is in contact with the pipe wall shall have zero velocity due to no flow boundary condition and if we move small distance away from the wall the velocity will have a non zero value thus a maximum gradient will exist at the surface of the pipe hence correspondingly the shear stresses will also be maximum.
Answer:
Feedforward basically configured and used mainly to avoid errors in a control system entering or disrupting a control loop
Explanation:
Feedforward basically configured and used mainly to avoid errors in a control system entering or disrupting a control loop. Although Feedforward control seems to be a very attractive idea, it imposes a high responsibility on both the system developer and the operator to examine and consider mathematically the effect of disruptions on the process concerned.
example of feedforward is
Shower
which consist of following control points
Hear toilet flush (measurement)
Customize water to compensate
feedback refers to that point when water turns hot before the configuration changes
Answer:

Explanation:
Given that
At top

We know that







So
m/s
We know that flow rate Q=AV

By putting the values


To find the flow rate we do not need the direction of flow,because we are just doing balancing of energy at inlet and at the exits of pipe.