Related Questions

As a result of detonation in an I.C. engine, following parameter attains very high value
A Peak pressure
B Rate of rise of pressure
C Rate of rise of temperature
D Peak temperature
One effect of detonation is
A Delay in ignition
B Loss of power
C Overheating of engine
D Overcooling of engine
Detonation is harmful due to
A Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine
B Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls
C High intensity of knock causes crankshaft vibration and the engine runs rough
D None of the above
Travelling at a constant speed of 32 miles per hours, a certain motorboat consumers 24gallons of fuel per hour. What is the fuel consumption of his boat this speed measured in miles per gallons of fuel?
A 2/3
B 3/4
C 4/5
D 4/3
A certain truck uses 18 gallons of diesel fuel in traveling 270 miles. In order for the truck to travel the same distance using 10 gallons of diesel fuel, by how many miles per gallon must the truck's fuel mileage be increased.
A 12
B 15
C 27
D 9
Two tanks are filled to capacity with automobile fuel. The first tank holds 600 gallons more than the second tank. If 100 gallons were to be pumped from each tank, the first tank would then contain 3 times as much fuel as the second tank. What is the total number of gallons of fuel in the two full tanks?
A 1,400
B 1,200
C 1,000
D 900
A man travels 5 miles towards west, 2 miles towards south, then again 5 miles towards west. What is the direct distance of destination from the starting point?
A 8 miles
B 15 miles
C 12 miles
D 6 miles
Azman travels 20 kilometers towards north, then 30 kilometers towards east, and then 20 kilometers towards north. How many kilometers is he now from the starting point?
A 20.3
B 70
C 44.7
D 50
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
In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency.
A Not effected
B Decrease
C Increase
D None of these

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