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The detonation tendency in petrol engines for specified conditions of fuel rating, compression ratio, speed, etc, can be controlled by having ___________

The detonation tendency in petrol engines for specified conditions of fuel rating, compression ratio, speed, etc, can be controlled by having ___________ Correct Answer smaller cylinder bore

Related Questions

Consider the following statement with reference to combustion and performance in a four-stroke petrol engine: 1. The auto-ignition temperature of petrol as a fuel is higher than that of diesel oil as a fuel. 2. The highest compression ratio of petrol engines is constrained by the possibility of detonation. 3. A petrol engine is basically less suitable for supercharging than a diesel engine. Which of the above statements are correct?
Two statements and a few problems are given. Which of the following problems can be solved through these statements? Statement I: A container contains 28L mixture of diesel and petrol. Statement II: The ratio of diesel to petrol is 3 : 1 and 28L of Petrol is added to the container. Problem 1: What is the quantity petrol in the container before petrol is added? Problem 2: What is the ratio of diesel to Petrol in the final mixture? Problem 3: What is the cost of Petrol in the mixture if total cost of mixture is Rs.1500?
Consider the following statements with regard to IC engines: 1. For best fuel economy of spark ignition engines, the fuel-air mixture should be lean 2. With supercharging, the specific consumption in compression ignition engines increases 3. With increase of load, knocking tendency in compression ignition engines increases Which of the above statements are correct?
In comparing the operation of the half-controlled 2-pulse circuit with that of the fully-controlled circuit, which of the following statements are evident? 1. Since half the thyristors are replaced by diodes, a half-controlled converter costs less than a fully-controlled converter. 2. Due to the freewheeling action with a half-controlled bridge-circuit power factor is improved in half-controlled converters. 3. The AC supply current is more distorted due to its zero periods with the half-controlled circuit, compared to a fully-controlled bridge circuit. Select the correct answer using the code given below :
Consider the schema Sailors(sid, sname, rating, age) with the following data Sid Sname Rating age 22 Dustin 7 45 29 Borg 1 33 31 Pathy 8 55 32 Robert 8 25 58 Raghu 10 17 64 Herald 7 35 71 Vishnu 10 16 74 King 9 35 85 Archer 3 26 84 Bob 3 64 96 Flinch 3 17 For the query SELECT S.rating, AVG(S.age) AS avgage FROM Sailors S Where S.age >= 18 GROUP BY S.rating HAVING 1 < (SELECT COUNT(*) FROM Sailors S2 where S.rating = S2.rating) The number of rows returned is
An empty fuel tank to a car was filled with A type of petrol. When the tank was quarter empty, it was filled with B type of petrol. Again when the tank was half empty, it was filled with A type of petrol. When the tank was half empty again, it was filled with B type of petrol. At this time, what was the percentage of A type of petrol in the fuel tank?
An empty fuel tank to a car was filled with petrol of type A. When the tank was quarter empty, it was filled with petrol of type B. Again when the tank was half empty, it was filled with petrol of type A. When the tank was half empty again, it was filled with petrol of type B. At this time, what was the percentage of petrol of type B in the fuel tank?
Three statements are followed by four conclusions numbered I, II, III and IV. You have to consider these statements to be true, even if they seem at variance from commonly known facts. Decide which of the given conclusions logically(s) follow from the given statements. Statements: 1. All petrol are diesel. 2. No diesel is kerosene. 3. All fuels are kerosene. Conclusions: I. Some fuel are petrol. II. No kerosene is petrol. III. No petrol is fuel. IV. Some kerosene are petrol.
Which one of the statement is correct?
1. Petrol engine is a reciprocating engine
2. Petrol engine is high speed engine
3. Petrol engine uses petrol as fuel
4. Petrol engine is internal combustion engine
What is the distance covered by boat N upstream in 5 hours? Which of the following option is sufficient alone to find the answer? A) Boat M is travelling downstream with 20% more downstream speed of boat N. Speed of boat M in still water is 10% more than the speed of boat N in still water. B) Boat M and Boat N are travelling downstream with speed 33 km/hr and 40 km/hr respectively and speed of boat M is still water is 2 times the speed of stream. C) Speed of boat M in still water is 6 km/hr less then speed of boat N in still water and speed of stream is 10 km/hr. D) Speed of stream is ½ times the speed of boat N in still water and downstream speed of boat M is 44 km/hr. E) Speed of stream is 10 km/hr and ratio of upstream speed of boat M and boat N is 3 : 2 respectively.