The colour of exhaust from diesel engine is generally Black Bluish Violet White TRUE ANSWER : ? YOUR ANSWER : ?
A petrol engine, during suction stroke draws Air only Petrol only None of these A mixture of petrol and air TRUE ANSWER : ? YOUR ANSWER : ?
In a diesel engine, the duration between the time of injection and ignition, is known as Delay period Burning period Pre-ignition period Period of ignition TRUE ANSWER : ? YOUR ANSWER : ?
The process of breaking up or a liquid into fine droplets by spraying is called Vaporisation Carburetion Ionization Atomization TRUE ANSWER : ? YOUR ANSWER : ?
The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to All of these Inject fuel at a high velocity to facilitate atomization Inject fuel in a chamber of high pressure at the end of compression stroke Ensure that penetration is not high TRUE ANSWER : ? YOUR ANSWER : ?
The correct mixture strength (by weight) for petrol is about 20.4 : 1 14.6 : 1 18.5 : 1 22.6 : 1 TRUE ANSWER : ? YOUR ANSWER : ?
In a typical medium speed, 4-stroke cycle diesel engine May start and end anywhere Fuel injection starts at just before top dead center and ends just after top dead center Fuel injection starts at top dead center and ends at 20° after top dead center Fuel injection starts at 10° before top dead center and ends at 20° after top dead center TRUE ANSWER : ? YOUR ANSWER : ?
The thermal efficiency of a petrol engine is _________ as compared to diesel engine. Same Less None of these More TRUE ANSWER : ? YOUR ANSWER : ?
The advancing of spark timing in spark ignition engines will ___ knocking tendency. Not effect None of the listed here Reduce Increase TRUE ANSWER : ? YOUR ANSWER : ?
If the ratios of all the corresponding linear dimensions are equal, then the model and the prototype are said to have Kinematic similarity None of these Dynamic similarity Geometric similarity TRUE ANSWER : ? YOUR ANSWER : ?