Alpha-methyl-naphthalene (<math xmlns="http://www.w3.org/1998/Math/MathML" class="wrs_chemistry"><msub><mi>C</mi><mn>11</mn></msub><msub><mi>H</mi><mn>10</mn></msub></math>) has a cetane number of 0 120 100 50 TRUE ANSWER : ? YOUR ANSWER : ?
Scavenging is usually done to increase Thermal efficiency Speed Fuel consumption Power output TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called Mechanical efficiency Overall efficiency Relative efficiency Volumetric efficiency TRUE ANSWER : ? YOUR ANSWER : ?
A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is 286 cm3 252 cm3 264 cm3 248 cm3 TRUE ANSWER : ? YOUR ANSWER : ?
By higher octane number of spark ignition fuel, it is meant that the fuel has Higher flash point Lower volatility Longer ignition delay Higher heating value TRUE ANSWER : ? YOUR ANSWER : ?
Number of working strokes per min. for a four stroke cycle engine are _________ the speed of the engine in r.p.m. Four-times Twice One-half Equal to TRUE ANSWER : ? YOUR ANSWER : ?
In a petrol engine, the fuel supplied to the engine cylinder is mixed with required quantity of air and the mixture is ignited with a Fuel injector Fuel pump None of these Spark plug TRUE ANSWER : ? YOUR ANSWER : ?
If the speed of the engine is increased, the indicated power will Increase None of these Remain same Decrease TRUE ANSWER : ? YOUR ANSWER : ?
Number of working strokes per min. for a two stroke cycle engine is ____ the speed of the engine in r.p.m. Twice Four-times One-half Equal to TRUE ANSWER : ? YOUR ANSWER : ?
The reference fuels for knock rating of spark ignition engines would include Normal octane and aniline Iso-octane and alpha-methyl naphthalene Normal heptane and iso-octane Iso-octane and normal hexane TRUE ANSWER : ? YOUR ANSWER : ?