The compression ratio in petrol engine is kept less than in Diesel engine because

A It makes petrol engines lighter
B Higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition
C Less compression ratio gives better performance
D It is just customary to have less compression ratio in petrol engines

Correct Answer: Higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition

The compression ratio in petrol engine is kept less than in Diesel engine because Higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition
Bissoy MCQ
#Mechanical Engineering #Automobile Engineering

Related Questions

An empty fuel tank of a car was filled with A type petrol. When the tank was half-empty, it was filled with B type petrol. Again when the tank was half-empty, it was filled with A type petrol. When the tank was half-empty again, it was filled with B type petrol. What is the percentage of A type petrol at present in the tank?
A 33.5%
B 37.5%
C 40%
D 50%
An empty fuel tank of a car was filled with A type petrol. When the tank was half-empty, it was filled with B type petrol. Again when the tank was half-empty, it was filled with A type petrol. When the tank was half-empty again, it was filled with B type petrol. What is the percentage of A type petrol at present in the tank ?
A 33.5%
B 37.5%
C 40%
D 50%
Two tanks A and B are filled with petrol. Tank A holds 600 liters more than B. If 100 liters of petrol were taken out from each tank, tank A would then contain 3 times as much petrol as tank B. What is the total number of liters of fuel in the two full tanks?
A 1400
B 1200
C 1000
D 900
Two tanks A and B are are filled with petrol. Tank A holds 600 litre more than tank B. If 100 litre of petrol were taken out from each tank A would then contain 3 times as much petrol as tank B. What is the total number of litre of fuel in the two full tanks?
A 1400
B 1200
C 1000
D 900
Three-fourth petrol of a reservoir is used to fill the petrol tanks of five trucks having the same storage capacity. What part of the total capacity of the petrol reservoir did each truck receive?
A 3/20
B 4/15
C 2/15
D 1/5
Three -fourth petrol of a reservoir is used to fill the petrol tanks of five trucks having the same storage capacity, what part of the total capacity of the petrol reservoir did each truck receive?
A 320
B 415
C 215
D 15
The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be
A More
B Less
C Same
D Data insufficient to predict
The specific fuel consumption of a petrol engine compared to diesel engine of same H.P. is
A Same
B More
C Less
D Less or more depending on operating conditions
In a petrol engine, if diesel is used, then the engine will
A Not run
B Run more efficiently
C Run at high speed
D Explode
A diesel engine as compared to petrol engine (both running and rated load) is
A More efficient
B Less efficient
C Equally efficient
D Other factors will decide it

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