Answer Posted / shah abdul haseeb

As we know in combustion chamber fuel and air mixture is present and it is ignited with the help of spark plug . But sometimes due to high temperature and pressure in combustion chamber fuel itself burned before the spark plug fires this phenomena is known as self ignition in petrol engine.

what is advantage and disadvantage of forward curve and backward curve blade of an id fan impeller and FD fan impeller??

1645

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THIS IS HARI PRASAD. I KNOW THAT HVAC MEANS HEATING VENTILATION & AIR- CONDITIONING. I NEED DESIGN CONSIDERATION OF HVAC UNIT.

2522

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Is radiography require in IBR piping of size 40 NB(1 1/2" inch)?

1594

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what is compression ratio? why its decreased when gear shifted ?

1915

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sir ,i applied rrb chennai for the post of junier engineer please sent model question papper with solved data to my mail id.aravindaptc@yahoo.co.in

1943

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Explain how to clean LO

1937

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HOW I SHOULD CALCULATE HEAT LOUD

1884

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1.how do you purchase the sheetmetal,machined components for OEMS? 2.WHAT IS THE SYSTEM TO BE MAINTAINE FOR PURCHASE ACTIVITY? 3.HOW DO U DO THE PRICE NEGOTIATIONS & ITS PROCEDURES? 4.WHAT ARE THE PROBLEMS WILL FACE WHILE PURCHASING THE COMPONENTS& WHAT IS THE SOLUTION TO OVERCOME BY THAT ONE 5.WHAT IS THE NECESSARY NOTES TO MAINTAIN THE PO& RELEASING THE PO?

2105

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1) Any pipe line working fluid may water / steam on it one manual isolation valve suppose one side of valve 6 kg/ cm^2 pressure (i.e. up stream) and other side is “ 0” kg/ cm^2 pressure(i.e. down stream) . So how much Tourqe required for opening the valve in terms of Newton force wheather normal man can open this valve. (for reference pipe nominal bore is 100 NB )

1875

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When was the first space rocket built?

1253

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How is propeller fitted in shaft?

1832

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What is bootrom? And how it works?

2631

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where the compressor is placed in the automobile?

2001

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what do you mean by turbine droop?

2139

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What is control volume system?

1113

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