What type of metal is used in a propeller

1 Answers   RRB,

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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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Where is Salar Jung Museum located?

3 Answers   HAL,

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what is meant by absorptivity?

0 Answers  

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What is a slined joint?

0 Answers  

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Why stop ratio valve is necessary before gas control valve in GE gas turbines.

1 Answers   GE,

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What happen when the expansion valve is excessively open?

0 Answers   RRB,

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how can calculate COP?

5 Answers  

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While finding the velocity of gear B , in case of a simple epicyclic gear train, why do we take tke velocity of gear A to be ZERO(0)if the arm is rotated with speed equal to that of gear A and in opposite direction?

0 Answers   MNC,

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

0 Answers   DAE,

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1>what is the material of ball bearing?

11 Answers   MAHINDRA,

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How a Diesel Engine Works in Generators?Explain with Labelled Diagram.

2 Answers  

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