how many types of jacks

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1.What is the difference between safety valve and relief valve?

9 Answers   Covanta Energy,

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a three phase squirrel cage induction motor runs slow? list all possible reasons for such fault.

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1: When mesuring the flow of liquid what are the two things to measure? 2: In which industrial process you will use centrifugal separator? 3: If any machinery or transmission needs periodic and regular lubrication what is the best method to give it? 4: Oil melts, grease melts. Is there any other lubrication which is effect at 200 deg c? 5: What is a torque converter? 6: Instead of having individual transmission what is the benefit of unified transmission? 7: What are the different types of mechanism to engage primary moving engine and transmission (in other words how many different types of clutches are there)? 8: In order to ensure constant pressure and constant flow rate of compressed air what should we put between the compressor and end user? 9: What can be the reasons for a metal gasket to leak? 10: The old welding machines used electromagnetic winding to step up the current for welding rods. What is the new principle inside the welding machines?

0 Answers   Petrotech,

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The amount of radiation emitted per scm per sec is called …. ?

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send me the rrb material

1 Answers   RRB,

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What pressure is highest L.O. Gravity Head or S.W. of the stern tube circulation

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what amount of heat energy loss in ESP?

1 Answers   BARC,

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hai this is sreenu...i also applied for the post of PO in syndicate bank..

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What parameters to be reported when we send lubricating oil for shore analysis?

0 Answers   RRB,

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What is latent heat of melting? What is latent heat of vaporization? What is difference b/w steam, wet steam, saturated steam and superheated steam? What is relationship of boiling point and pressure? What is mean by HP steam? What is function of HP steam system? What are main components of HP steam system? What is function of steam strainer? What are conditions for opening of warm up control v/v LBA10AA050? What are conditions for opening of turbine control v/v?

2 Answers  

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Discuss the role of manganese in alloying steels?

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