A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed. Four times Double Half Same TRUE ANSWER : ? YOUR ANSWER : ?
All heat engines utilize High heat value of oil Net calorific value of oil Calorific value of fuel Low heat value of oil TRUE ANSWER : ? YOUR ANSWER : ?
The effective inhibitor of pre-ignition is Water None of these Alcohol Lead TRUE ANSWER : ? YOUR ANSWER : ?
The knock in diesel engine occurs due to Instantaneous and rapid burning of the first part of the charge Reduction of delay period Instantaneous auto ignition of last part of charge Delayed burning of the first part of the charge TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following engines will have heavier flywheel than the remaining ones? 30 kW four-stroke petrol engine running at 1500 r.p.m. 30 kW two-stroke diesel engine running at 750 r.p.m. 30 kW four-stroke diesel engine running at 750 r.p.m. 30 kW two-stroke petrol engine running at 1500 r.p.m. TRUE ANSWER : ? YOUR ANSWER : ?
The ignition quality of diesel oil is expressed by None of the listed here Octane number Calorific value Cetane number TRUE ANSWER : ? YOUR ANSWER : ?
The object of supercharging the engine is To increase the power output of an engine when greater power is required To reduce space occupied by the engine To reduce mass of the engine per brake power All of these 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 Increasing the compression ratio Adherence to proper fuel specification Using additives in the fuel TRUE ANSWER : ? YOUR ANSWER : ?
If V₁ is the jet velocity and V₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by V₀/(V₀ + V₁) V₁/(V₀ + V₁) (V₀/V₁)/ [1 + (V₀/V₁)²] [2(V₀/V₁)]/ [1 + (V₀/V₁)²] TRUE ANSWER : ? YOUR ANSWER : ?