Pour point of fuel oil is the 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 Indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off Temperature at which it solidifies or congeals It catches fire without external aid TRUE ANSWER : ? YOUR ANSWER : ?
A fuel of cetane number 40 has the same ignition quality as a mixture of 40% alpha methyl naphthalene and 60% cetane 40% cetane and 60% alpha methyl naphthalene 40% diesel and 60% petrol 40% petrol and 60% diesel TRUE ANSWER : ? YOUR ANSWER : ?
A diesel engine, during suction stroke, draws Diesel only A mixture of diesel and air Air only None of these TRUE ANSWER : ? YOUR ANSWER : ?
In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of 250°C 1000°C 500°C 2000°C TRUE ANSWER : ? YOUR ANSWER : ?
The reference fuels for knock rating of spark ignition engines would include Iso-octane and alpha-methyl naphthalene Iso-octane and normal hexane Normal octane and aniline Normal heptane and iso-octane TRUE ANSWER : ? YOUR ANSWER : ?
The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be 0.5 0.25 0.7 1 TRUE ANSWER : ? YOUR ANSWER : ?
Morse test is used to determine the I.P. of a Four stroke engine Single cylinder petrol engine Single cylinder diesel engine Multi cylinder engine TRUE ANSWER : ? YOUR ANSWER : ?
The process of breaking up or a liquid into fine droplets by spraying is called Carburetion Vaporisation Ionization Atomization TRUE ANSWER : ? YOUR ANSWER : ?
The purpose of testing an internal combustion engine is To determine the information, which cannot be obtained by calculations To satisfy the customer regarding the performance of the engine To conform the data used in design, the validity of which may be doubtful All of these TRUE ANSWER : ? YOUR ANSWER : ?
The air-fuel ratio in petrol engines is controlled by Governing Injection Controlling valve opening/closing Carburetion TRUE ANSWER : ? YOUR ANSWER : ?