Internal Combustion Engines
Supercharging is the process of

Supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
Supplying compressed air to remove combustion products fully
Injecting excess fuel for raising more loads
Providing forced cooling air

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Internal Combustion Engines
Flash point of fuel oil is

Indicated by 90% distillation temperature, i.e. when 90% of sample oil has distilled off
Temperature at which it solidifies or congeals
Temperature at which it catches fire without external aid
Minimum temperature to which oil is heated in order to give off inflammable vapours in sufficient quantity to ignite momentarily when brought in contact with a flame

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Internal Combustion Engines
The brake power (B.P.) of the engine is given by (where W = Brake load or dead load in newtons, l = Length of arm in meters, N = Speed of engine in r.p.m., S = Spring balance reading in newtons, D = Dia. of brake drum in meters, and d = Dia. of rope in meters)

P = [(W - S) π (D + d) N]/60 watts
P = [(W - S) πDN]/60 watts
P = (Wl × 2πN)/60 watts
All of these

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