Answer Posted / shantanu singh

friends...

in petrol engines we use carburator. which provides
homogeneous mixture of fuel & air. thus a good combustion.
but in diesel engine we have fuel injectors & the mixing of
air & fuel depends upon turbulence in the chamber. so not a
proper homogeneous mixture hence combustion is relatively
poor. power is directly related to rate of combustion.
hence petrol engines produce more power.

Critical speed of turbine means the natural frequency and resonance frequency are matching and cause for vibration and noise. which is the natural frequency. how it reflect in vibration.

1977

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I heard that the acetylene cylinder pressure can't be brought down below bar while using for welding activity. Is it true. . If so pl explain why

2203

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List the energy saving opportunities in air compressor system.

1543

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What is the purpose of increasing the pressure on the F.O. system of the engine?

2193

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Describe transfer machines?

1205

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Define extrued aluminum?

1216

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What is the purpose of corrugated furnaces?

1888

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based on the recruitment program and the expected resumption date

1755

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Who invented the four-stroke engine?

1119

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How to calculate motor bearing life - cycle (life time) (SKF bearing) how determine the capacity of refrigeration system? how we use condenser coils, compressor, capillarity,compressor how determine the capacity of refrigeration system? how we use condenser coils, compressor, capillarity,compressor what is rigging

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Name the types of welding?

1254

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What are the causes of dirty lubricating oil?

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After any cause of repaired how i start the engine by slow speed 800 to 900 rpm electronic control moudle engine [cummins]

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what are the applications where bearing should not be used though it can be used(economy may be 1 of the reason)

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Why PWHT IS NOT DONE TO STAINLESS STEEL MATERIAL?

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