Internal Combustion Engines
Crankcase explosion in I.C. engines usually occurs as

First a mild explosion followed by a bi explosion
Never occurs
First a big explosion followed by a mil explosion
Both mild and big explosions occurs simultaneously

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
Flash point of fuel oil is

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

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Internal Combustion Engines