Answer / shriram.....

Function of lead screw & ball screw are same like nut & bolt
Lead screw means it one threaded screw.

Lead screw used for conventional machines like lath,
sapping, drilling machines
Lead screw gives 20-micron accuracy & it has wear & tear is
more as compare to ball screw.

Ball screw used where high accuracy & performance required
like in CNC machining center. In ball screw balls are used
for smooth operation in this case
Wear & tear is less as compare to lead screw.

Answer / deepak

the major difference between ball screw & lead screw is the load caaring capacitymechanism

How can i calculate knee point voltage of 800/5A Current transformer?please explain me with suitable calculation?

2 Answers  

---

what is inter connected dc generator?

0 Answers   Lovely Professional University,

---

Why D.C Voltage used in Meggering...as well as in Hipot test? why not A.C?

2 Answers  

---

1. What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV?

3 Answers   BCPL,

---

Will any motor burn if voltage provided is lesser than the rated voltage???? If yes, then how is speed control possible with voltage control

0 Answers  

---

---

how to select energy meter? have any calculation?

0 Answers  

---

What is the formula to find out cross sectional area of cable for certain current rating?

1 Answers   MRF,

---

any earth foult trip the relay but in welding time not trip by earth foult

0 Answers   Power Grid, Siemens,

---

what is phase voltage phase current line current and their usage? provide diagram

1 Answers  

---

300m long and 30kw inductive loade 3phase supply how many size cable required

0 Answers  

---

If there is 25 hp motor,which type of starters we can us? why?

7 Answers  

---

Isi standard of lux level required / to be maitained in different working place general & in textaile industry.

1 Answers  

---