Mechanical Engineering :: Internal Combustion Engines
- The advancing of spark timing in spark ignition engines will _________ knocking tendency.
- The higher combustion chamber wall temperature in compression ignition engines will _________ knocking tendency.
- In petrol engines, advancing of the spark timing will _________ the knocking tendency.
- In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency.
- The increase of cooling water temperature in petrol engine will _________ the knocking tendency.
- Flash point of fuel oil is
- The working pressure and temperature inside the cylinder of an internal combustion engine is _________ as compared to a steam engine.
- If V₁ is the jet velocity and V₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by
- Thermal efficiency of a two stroke cycle engine is _________ a four stroke cycle engine.
- Theoretically, a four stroke cycle engine should develop _________ power as that of a two stroke cycle engine.
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A.
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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B.
Temperature at which it solidifies or congeals |
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C.
Temperature at which it catches fire without external aid |
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D.
Indicated by 90% distillation temperature, i.e. when 90% of sample oil has distilled off |