Internal Combustion Engines Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine? Exhaust valve closing after top dead center Inlet valve closing before bottom dead center Inlet valve opening before top dead center Inlet valve closing after bottom dead center Exhaust valve closing after top dead center Inlet valve closing before bottom dead center Inlet valve opening before top dead center Inlet valve closing after bottom dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The reference fuels for knock rating of spark ignition engines would include Normal octane and aniline Iso-octane and normal hexane Normal heptane and iso-octane Iso-octane and alpha-methyl naphthalene Normal octane and aniline Iso-octane and normal hexane Normal heptane and iso-octane Iso-octane and alpha-methyl naphthalene ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The air standard efficiency of an I.C. engine is given by (where r = Compression ratio, and γ = Ratio of specific heats) 1 + rγ - 1 None of these 1 - (1/rγ - 1) 1 - rγ - 1 1 + rγ - 1 None of these 1 - (1/rγ - 1) 1 - rγ - 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knock in diesel engine occurs due to Instantaneous and rapid burning of the first part of the charge Instantaneous auto ignition of last part of charge Reduction of delay period Delayed burning of the first part of the charge Instantaneous and rapid burning of the first part of the charge Instantaneous auto ignition of last part of charge Reduction of delay period Delayed burning of the first part of the charge ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A fuel of cetane number 40 has the same ignition quality as a mixture of 40% petrol and 60% diesel 40% alpha methyl naphthalene and 60% cetane 40% diesel and 60% petrol 40% cetane and 60% alpha methyl naphthalene 40% petrol and 60% diesel 40% alpha methyl naphthalene and 60% cetane 40% diesel and 60% petrol 40% cetane and 60% alpha methyl naphthalene ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines If V₁ is the jet velocity and V₀ is the vehicle velocity, then propulsive efficiency of a turbojet engine is 2V₀ / (V₀ + V₁) V₁ / (V₀ + V₁) V₀ / (V₀ + V₁) 2V₁ / (V₀ + V₁) 2V₀ / (V₀ + V₁) V₁ / (V₀ + V₁) V₀ / (V₀ + V₁) 2V₁ / (V₀ + V₁) ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS