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If Bashar can run around a ground four times in 20 minutes and Rahim can run around the same ground three times in 12 minutes, who can run around that ground more times in an hour, and how many times more can he run around ?
If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have
A spark plug gap is kept from
Two circular dials of exactly the same size are mounted on a wall side by side in such a way that their perimeters touch at one point. Dial 1, which is on the left , spins clockwise around its center , and dial 2 , which is on the right spins counter clockwise around its center . (Assume that there is no friction at the point of contact between the dials.) Each dial is marked on its perimeter at three points that are at equale distances around the points arked ondial 1 are N, O, and P and the points marked on dial 2 are X, Y, and Z. If points O and Z are just meeting at the point of contact between the dials , and if dial 1 spins at the same speed as dial 2, what is the smallest number of revolutions of each dial that will bring O and Z together again?
If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on
Spark plug makes use of which of the following materials for insulation ?
In a petrol engine, the high voltage for spark plug is in the order of
Spark plug is provided in a/an
The advancing of spark timing in spark ignition engines will _________ knocking tendency.