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.

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Explain enthalpy.

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Given a cutaway isometric view of the steam turbine.

0 Answers   ABC Inc, RRB, Siemens,

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Hydrogen cannot be removed easily from molten steel. What harm hydrogen has on property of steel ?

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what is the regulating speed in a hydraulic coupling

1 Answers  

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What is short cycling in refrigeration system?

0 Answers   RRB,

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what is punching force required for embossing of depth 3.5mm and diameter 58mm

0 Answers   Omkar Solar System,

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what will happen if petrol is fed to diesel engine and disel is fed to petrol engine?in any case engine will run or not?

8 Answers   Bosch, Honda, IH, NTPC,

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What are the causes of damage to propellers?

0 Answers   RRB,

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TRANSACTION CODE FOR GR/IR ACCOUNT CLEARING WITH POSTING DATE OF GR (MATERIAL DOCUMENT POSTING DATE)TO CHECK ACTUAL CLEARING GR/IR CONTROLLING ACCOUNT

1 Answers  

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WHAT WILL HAPPEN IF RELIEF VALVE IN HYDRAULIC SYSTEM FAILS?

4 Answers  

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Define steam turbine diaphragm?

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