Answer / pranay

vacuum created by extracting air from closed chamber

Answer / pp13900

Press a suction cup flat against a wall and pull back, the inside of the cup will contain a vacuum

Answer / l.anil kumar

We create the vacuum due to eject the water from a closed vessel

What is the difference between pipe and tube?

6 Answers   Bhel, NTPC,

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what is mean by pitch diameter?

6 Answers   Greaves,

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How many isomers have the name bromomethylcyclopentane?

1 Answers  

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where half nut is use

2 Answers   DMRC, NMDC,

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I HAVE SELECTED INTERVIEW FOR GOVT POLYTECHNIC LECTURERS.I DONT KNOW ANYTHING.PLZ HOW INTERVIEW WILL GO AND WHAT QUE'S SUPPOSE TO ASK ABOUT SUBJECT.PLEASE SEND QUE'S AND ANSWERSTO MAIL OR CALL THIS NO:9966924990.PLZ HELP ME.

0 Answers  

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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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What is the differenc between total moisture and inherent moisture in coal ?

0 Answers  

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how many octane number in indian rifinery

1 Answers   DRDO,

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How to calculate the capacity of a STP (sewage treatment plant).

1 Answers  

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area under P-V diagram indiacates what?

10 Answers   APGenco, Ford,

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Tell about payment ?

2 Answers  

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"How to check the diode, fuse and bearer switch?"

0 Answers   RRB,

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