Answer / krishna

oil

Answer / harish

Actually the question itself is incomplete for example if
we are machining cast iron then air is the best lubricant,
If we are machining mild steel water is the best lubricant,
If we are machining alloy steels then mineral oils are the
best lubricants so we cant specifically say a particular
lubricant is better all the lubricants are equally
important.

Answer / sushil

oil

Answer / s.khan

oil is the best lub.

Answer / rakesh

no air is the best lubricant because lubricant means to
reduce the friction .i give a example to explain my
answer .megnatic traing .there is no oil no water only air
in b/w the track or train less friction as compaire to oil
and water

1 air
2 oil
3 water

Answer / g.sailendra reddy

oil

What is ERW & shedule & seamless pipe? and whas the IBR grade pipe.

5 Answers   Grasim, Jindal Steel and Power, NI,

L&T construction mechanical questions

0 Answers   L&T,

Re: what is different between run out and concentricity in Gd &T

0 Answers  

What are two essential conditions of perfect gas ?

0 Answers  

Explain how can I see where pipes are behind the wall?

0 Answers  

What do you mean by annealing?

0 Answers  

WHAT IS THE MERITS OF INTERNAL COMBUSTION ENGINE?

1 Answers  

What is entropy

2 Answers   RRB,

What is the difference between Muff Coupling and Screwed Coupling with Cotter pin used in pump line shafts.

0 Answers   DAE,

in a centrifugal pump .. when we close the delivery valve partially .. does this increase the pressure before or after the valve .. and why ??

1 Answers  

What is thrust bearing?

1 Answers   RRB,

How a main gate (steel) get support from top whlie slides on the rail fixed on the bottom surface??

0 Answers