Internal Combustion Engines
In order to eliminate knocking in compression ignition engines, there should be

Short delay period
Late auto-ignition
Low compression ratio
High self ignition temperature of fuel

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
In a typical medium speed 4-stroke cycle diesel engine the inlet valve

Opens at 20° before top dead center and closes at 35° after the bottom dead center
May open or close anywhere
Opens at 10° after top dead center and closes 20° before the bottom dead center
Opens at top dead center and closes at bottom dead center

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
Volatility of diesel fuel oil is

Indicated by 90% distillation temperature, i.e., when 90% of sample oil has distilled off
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
Temperature at which it solidifies or congeals
It catches fire without external aid

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Internal Combustion Engines