What materials use to make valve body, and What data needs
to choose correct valve size
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What will you check if one cylinder of your engine is not like the others?
In what conditions it is necessary to trip the boiler? what about burner in these conditions?
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?
What is the usage of draft tube in reaction turbine ?
Which heating value is indicated by a calorimeter and why ?
How curvature effect is consideed in spring design?
What is the jet plane?
what is difference between british wire guage & birmingham wire guage
How much is the maximum distance between the impeller wear ring & casing wear ring pump?
what is the duty & responsibilities of management representative.
length l and width b is given for a rectangle.and the perimeter of a rectangle is denoted by p.another rectangle length is 2l and width is 3b and the perimeter of a rectangle is p1.find the ratio between those two perimeters?
Can someone tell me the related topics or helping books for the hpcl interview questions (for engineer graduates..)
1 Answers HPCL, Machine India,
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