WHAT IS THE DIFFERENCE B/W LUBE OIL 20 W 40 AND 20 W 40 OIL.

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Explain the difference between pearlite and cementile ?

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What is screw,centrifugal and rotary type compressors,how it works and what is principle .

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in which welding process liquid metal is poured?

18 Answers   ABB, NTPC,

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1 Answers   HPCL,

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For a high pressure/ high temperature multistage pump (Boiler Feed Water Pump), what is the average life of mechanical seal? Does life of DE and NDE differ, if differ, how much? Why?

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What is a brake horsepower?

1 Answers   ABC Inc, RRB, Siemens,

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1 Answers   Petro Star Mount,

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What is the meaning of probe in Boilers and that stuff?

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Why is nitrogen used in welding?

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• Do you have any questions for me?

1 Answers   Ecosol, Petro Star Mount,

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