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%
The increase of cooling water temperature in petrol engine will _________ the knocking tendency.
A Not effect
B Decrease
C Increase
D None of these
Knocking tendency in a petrol engine decreases with increasing
A Supercharging
B Compression ratio
C Wall temperature
D Engine speed
With increase in __________ Knocking tendency in a spark ignition petrol engine decreases.
A Supercharging
B Wall temperature
C Compression ratio
D Engine speed
The knocking tendency in compression ignition engines for a given fuel will be
A Enhanced by decreasing compression ratio
B Enhanced by increasing compression ratio
C Dependent on other factors
D None of the above
Tetraethyl lead is added to the petrol to increase its octane number, because its octane number is
A More than 100
B Round about 100
C Between 50 and 100
D Less than 25
In petrol engines, advancing of the spark timing will _________ the knocking tendency.
A Not effect
B Decrease
C Increase
D None of these
The higher combustion chamber wall temperature in compression ignition engines will _________ knocking tendency.
A Increase
B Reduce
C Not effect
D None of these
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

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