In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of 1000°C 2000°C 250°C 500°C TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is false statement? Piston ring and cylinder wear Detonation Formation of hard coating on piston skirts Oil sludge in the engine crank case TRUE ANSWER : ? YOUR ANSWER : ?
Does the supply of scavenging air at a density greater than that of atmosphere mean engine is supercharged? No Unpredictable To some extent Yes TRUE ANSWER : ? YOUR ANSWER : ?
The injection pressure in a diesel engine is about 10 bar 150 bar 100 bar 500 bar TRUE ANSWER : ? YOUR ANSWER : ?
The ignition quality of petrol is expressed by Calorific value All of these Cetane number Octane number TRUE ANSWER : ? YOUR ANSWER : ?
Supercharging is the process of Providing forced cooling air Supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere Injecting excess fuel for raising more loads Supplying compressed air to remove combustion products fully TRUE ANSWER : ? YOUR ANSWER : ?
In a four stroke cycle engine, the sequence of operations is Expansion, compression, suction and exhaust Compression, expansion, suction and exhaust Suction, compression, expansion and exhaust Suction, expansion, compression and exhaust TRUE ANSWER : ? YOUR ANSWER : ?
Antiknock for compression ignition engines is Napthene Tetra ethyl lead Amyl nitrate Hexadecane TRUE ANSWER : ? YOUR ANSWER : ?
If the compression ratio in I.C. engine increases, then its thermal efficiency will Remain same Decrease Increase None of these TRUE ANSWER : ? YOUR ANSWER : ?