The fuels in order of decreasing knock tendency for spark ignition engines are Napthene, paraffin, aromatic Paraffin, aromatic, napthene Napthene, aromatics, paraffin Paraffin, napthene, aromatic TRUE ANSWER : ? YOUR ANSWER : ?
The method of determination of indicated power of a multi cylinder spark ignition engine is by the use of Prony brake test Heat balance test Morse test Motoring test TRUE ANSWER : ? YOUR ANSWER : ?
The cetane (Câ‚₆H₃₄) which is a straight chain paraffin, is assigned a cetane number of 50 100 120 TRUE ANSWER : ? YOUR ANSWER : ?
The correct mixture strength (by weight) for petrol is about 18.5 : 1 20.4 : 1 14.6 : 1 22.6 : 1 TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of the indicated thermal efficiency to the air standard efficiency is known as Overall efficiency Mechanical efficiency Volumetric efficiency Relative efficiency TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine? Inlet valve opening before top dead center Inlet valve closing before bottom dead center Inlet valve closing after bottom dead center Exhaust valve closing after top dead center TRUE ANSWER : ? YOUR ANSWER : ?
The reference fuels for knock rating of spark ignition engines would include Iso-octane and normal hexane Normal octane and aniline Iso-octane and alpha-methyl naphthalene Normal heptane and iso-octane TRUE ANSWER : ? YOUR ANSWER : ?
In a four stroke cycle petrol engine, the compression Starts at 40° before bottom dead centre and ends at 30° after bottom dead centre Starts at 40° after bottom dead centre and ends at 30° before top dead centre May start and end anywhere Starts at bottom dead centre and ends at top dead centre TRUE ANSWER : ? YOUR ANSWER : ?
For the same power developed in I.C. engines, the cheaper system is Turbo charger Supercharged Naturally aspirated Centrifugal pump TRUE ANSWER : ? YOUR ANSWER : ?
The process of breaking up or a liquid into fine droplets by spraying is called Carburetion Atomization Vaporisation Ionization TRUE ANSWER : ? YOUR ANSWER : ?