Answer / harshit

Both of them are used to convert their revolutionary motion
into linear motion. They emlpoys nut and bolt principle.
When this mechanism is used in CNC machine to move the
workpiece table then the screw is called BALL SCREW. but
when the screw is used with lathe to give feed to the tool
then it is called LEAD SCREW.

Answer / naresh

Both are nut & bolt mechanism.
Where as in ball srew ball will place in between nut and
bolt for fine moment.
Where as in lead screw nut and bolt mechanism will use.

Upper piston ring is compression ring?

8 Answers   BEL,

---

What will you do when scavenge fire happened?

2 Answers  

---

What is the pressure of fuel oil on main engine and diesel generator?

0 Answers   RRB, Trident,

---

How to calculate CFM of fan?

2 Answers  

---

What for schmidt plot for is used in heat transfer problems ?

0 Answers  

---

What are the different types of mechanism to engage primary moving engine and transmission (in other words how many different types of clutches are there)?

1 Answers   Focus,

---

whether its necessary to consider erw pipes as a seam pipe

1 Answers   Hyundai,

---

Where is the expansion tank located?

0 Answers   RRB,

---

What is the formula for heat loss in a pipe?

0 Answers  

---

Why entropy change for a reversible adiabatic process is zero ?

0 Answers  

---

about basic questions ofpiping engg

0 Answers  

---

What is the principle of operation of simple jet propulsion system?

3 Answers  

---