When crude oil is heated, then which of the following hydrocarbon is given off first? Gasoline Natural gas Paraffin Kerosene TRUE ANSWER : ? YOUR ANSWER : ?
Pour point of fuel oil is the It catches fire without external aid Temperature at which it solidifies or congeals Indicated by 90% distillation temperature i.e., when 90% of sample oil has distilled off 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 TRUE ANSWER : ? YOUR ANSWER : ?
For the same power developed in I.C. engines, the cheaper system is Supercharged Naturally aspirated Centrifugal pump Turbo charger TRUE ANSWER : ? YOUR ANSWER : ?
The normal heptane (C₇Hâ‚₆) is given a rating of ________ octane number. 120 50 100 TRUE ANSWER : ? YOUR ANSWER : ?
In a typical medium speed, 4-stroke cycle diesel engine Fuel injection starts at 10° before top dead center and ends at 20° after top dead center Fuel injection starts at just before top dead center and ends just after top dead center May start and end anywhere Fuel injection starts at top dead center and ends at 20° after top dead center TRUE ANSWER : ? YOUR ANSWER : ?
The knocking tendency in spark ignition engines may be decreased by Controlling the air-fuel mixture Controlling the exhaust temperature Controlling the ignition timing Reducing the compression ratio TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is false statement? Some of the methods used to reduce diesel smoke are as follows Avoidance of overloading Adherence to proper fuel specification Increasing the compression ratio Using additives in the fuel TRUE ANSWER : ? YOUR ANSWER : ?
In case of gas turbines, the gaseous fuel consumption guarantees are based on High heat value Low heat value Net calorific value Calorific value TRUE ANSWER : ? YOUR ANSWER : ?
In a petrol engine, if diesel is used, then the engine will Run at high speed Not run Explode Run more efficiently TRUE ANSWER : ? YOUR ANSWER : ?
In a diesel engine, the duration between the time of injection and ignition, is known as Period of ignition Pre-ignition period Delay period Burning period TRUE ANSWER : ? YOUR ANSWER : ?