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What is the essence of slump test as used in civil engineering?
Slump test is the most commonly used method of measuring workability of concretewhich can be employed either in laboratory or at site of work.It is seen that the slump test gives fairly good consistent results for a plastic-mix. This test is not sensitive for a stiff-mix. In case of dry-mix, no variation can be detected between mixes of different workability. In the case of rich mixes, the value is often satisfactory, their slump being sensitive to variations in workability.
What is the difference between premixed and diffusion flame?
Two main different combustion regime: diffusion flame is generated when fuel and oxidizer are provided separately and then mixes with each other and reacts in the mixing zone; while premixed flame is generated when fuel and oxidizer are totally mixed and goes to burning after ignition. The main difference is that premixed flame forms a propagating wave front and diffusion flame tends to be stable. Due to that, premixed flame is more sensitive to acoustics, i.e. flashback and blow-off. On the other hand, the mixing is a key factor for diffusion flame. If mixing is not enough, we suffers with high soot and unburnt hydrocarbon emissions. The flame thickness is different a lot, and premixed flame is much thinner. In terms of environment issue, NOx emission is relatively higher in premixed flame than in diffusion flame due to higher flame temperature. In application, safety is a main concern for premixed flame, so that stabilization is always applied in practice. Diffusion flame is more widely applied, especially on aircraft and power station.
What device mixes air and petrol for the internal combustion engine?
The device that mixes air and petrol for the internal combustion engine is the carburetor. It controls the air-fuel ratio to ensure efficient combustion in the engine.
What device mixes air and petrol gas for the internal combustion engine?
The device that mixes air and petrol gas for an internal combustion engine is called a carburetor. It is responsible for blending the air and fuel in the correct ratio before delivering it to the engine for combustion.
What device mixes air and petrol for internal combustion engine?
The traditional such device for a gasoline engine is a carburetor, but modern engines can also use injection nozzles; these are standard for diesel engines.
What happens if petrol mix with engine oil in a 4 stroke engine?
If petrol mixes with engine oil in a 4 stroke engine then the mixture becomes thick and its combustion will not be efficient. The exhaust will be smoky due to this incomplete combustion. also this will reduce engine efficiency.
Why petrol has red color?
petrol is red because blood mixes
What is the carburetor?
It's a device that mixes fuel and air prior to the engine pulling the mixture into the cylinders for combustion. The carburetor also allows the vehicle operator to control the power/speed of the engine by controlling the amount of air that is allowed into the engine.
Mixes fuel and air before enterin engine?
carb
What is engine carburetor?
The device that mixes the proper amount of fuel and air depending on the position of the accelerator. The mixture is then sent down the intake manifold to all cylinders. It allso sets the idle speed of the engine and increases the fuel/air mixture during a cold startup.
Detonation of petrol engines?
Detonation is a misused word. Pre-ignition is the common problem which cause mis-timing of the combustion cycle. Pre-ignition occurs from a combination of high heat ignition source, temperature and lean ratio mixes. Detonation has two main features, a) poor combustion design that causes a clash of two flame fronts within the combustion chamber that causes two shock waves to hit each other and creates a destructive force. b) a correct combustion chamber that allows the ultra lean fuel mix to explode omni-direction and consumes all the fuel mixture and then extinguishes itself and thus renders no harm to the engine with the expanding gas as the work loan and the contracting gas as a cooling gas at the end of the cycle. A petrol engine with the correct combustion chamber can run on compression ratios of 20:1 and lean petrol mixes as a detonation engine. The real future of the petrol engine is yet to be produced with extraordinary milage and low pollutants. SCB
What engine part is it that mixes air and gasoline and sends it as a fine mist to the engine cylinders?
That's the carburettor.
What happens to a car engine when it over heats?
crack the engine block and oil mixes with water or antifreeze.
Why is sulphur removed from petrol before it is used as a fuel for motor vehicles?
Sulphur is removed from petrol in some countries because burning petroleum releases sulphur dioxide. This mixes with water vapour and rain in the atmosphere to cause acid rain.
