Internal Combustion Engines
Which of the following is false statement? Some of the methods used to reduce diesel smoke are as follows

Adherence to proper fuel specification
Increasing the compression ratio
Avoidance of overloading
Using additives in the fuel

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Internal Combustion Engines
The tangential velocity of the water element having a free vortex is

Inversely proportional to its distance from the centre
Directly proportional to its distance from the centre
Directly proportional to its (distance)2 from the centre
Inversely proportional to its (distance)2 from the centre

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