Answer / chaitanya pithawa

according to me, hoop stress is more dangerous than
longitudinal stress, because the dangerous area coming under
the hoop stress is circumferemtial,while in longitudinal,the
axial area will come under dangerous area will will be less
than circumferential area.
So the hoop stress is more dangerous than longitudinal stress.

Answer / abdalbaset hagagi

hoop stress

Answer / raghavendra

it depends upon the the object dimensions .
if it small and has a spherical structure circumferential
area would be effected .hence hoop stress is dangerous.
but long cylinders due more exposure of longitudinal stress
hence longitudinal stress is dangerous

In volute casing the discharge area is more. so as per bernoulli's principle the pressure must be reduces also from the basics, pressure = Force/Area. so pressure and area are inversily proportional. By considering these two basic rules pressure must be reduces. But in any centrifugal pump, the pressure is increasing. How the velocity is converted into pressure. In my view only head is increases but how the pressure increases?

2 Answers  

---

what happens when the spark are introduced before the piston reaches maximum

4 Answers   KBR,

---

how we calculate the induced air capacity of id fan of a boiler?

0 Answers   Delight Dairy,

---

• Tell me about the most fun you have had on the job.

1 Answers   Petro Star Mount,

---

sir,iam member to your gk books for one year plan,i have recived every months.i request you i want techical questions pls send as soon as possible

0 Answers  

---

what are the resorces and equipment for measurement and how we can defiend Measurement.

2 Answers   Jindal,

---

why the lever of spring loaded safety valve is very long?

1 Answers  

---

What is mean by retrofitting of machine tool please brief

1 Answers   DRJ ARDE,

---

what is the cause of erratic misfire in DG

1 Answers  

---

Which impurities form hard scale and which impurities soft scale ?

0 Answers  

---

What is the purpose of I.O. circulation before and after starting of engine?

0 Answers  

---

i want to know the difference between proportional hydraulic valve & servo hydraulic valve

0 Answers  

---