sir i want model and previous year question paper of RRB. please send it to my mail id. im a mechanical engg.

0 Answers   RRB,

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what is the difrence between goal and target?

1 Answers  

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how to define nomenclature of bearing.

0 Answers   Bhel, Cethar, TATA,

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types of stainless steel.why does this called stainless.what is passivation related to SS? What is sensitisation in stainless? Examples of diffrent type of steel e.g. austenatic,martensite,ferritic etc. 304,303,316. How to get rid of carbide formation in SS and stablization in SS.(347 etc.)Different type of heat treatments. Iron carbon diagram. Nelson chart with respect to corosion. Diffrent type of corosion and causes. Carbon equvalent number. Welding related questions.(requirement of post and pre heating in welding). welding of SS. If you have pre experience in maintenance then Material and welding related questions will be there. Then various types equipment in plant (a) static (b) rotatic in pumps and compressor,turbines funda of balance drum and balance disc, balancing line. Impulse wheel, wheel chamber pressure and its effect on turbone health if this increases. Thermal expansion of turbines and with respect to how foundation bolting are designed. Fixing of lower casing before dismantling. Most important shaft alignment and balancing of rotating equipment,classification of static and rotatic equpment used in process plants. Materials for diffrent services as refinery plants fertilizer plants, cement plants, sulphur plants, crude oil with higher sulphur services, then third important thing is codes, standards and recommended practices of diffrent organisation like ASTM,ASME,API,TEMA,BIS,IS,ISO,NPFA,OISD etc. diffrent type of work permit systems fire and safety point of view.

1 Answers  

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Heavy fuel oil sulfur content and counter measures?

0 Answers  

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Explain working of francis turbine?

0 Answers   John Deere,

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Which is the welding process you have carried out in workshop?

0 Answers  

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Briefly explain the term gravity

0 Answers  

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how water get evaporated in cooling tower

4 Answers  

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Some questions was asked related to boundry layer and vortex flow.

1 Answers   Bhel,

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In convection heat transfer, if heat flux intensity is doubled then temperature

0 Answers  

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What does thermal diffusivity of metals signify.

0 Answers  

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