If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on

If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on Correct Answer Too rich mixture

If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on Too rich mixture
Bissoy MCQ

Related Questions

How is the voltage of the used spark plug to fire when compared to a new spark plug?
Which of the following spark plug increases the resistance to increase the voltage required to jump across the spark plug gap?
The voltage required to produce a spark between the spark points in spark plug is in the range
Compared to the life of a spark plug of two stroke engine, the sprk plug life of a four stoke engine is approximately
In a city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city has neither black hair nor black eyes?
In a certain city 40% of the people have black hair, 25% have black eyes and 10% have both black hair and black eyes. What percentage of the people in the city have neither black hair nor black eyes?
In a spark ignition engine combustion which is initiated between the spark plug electrodes spreads across the combustible mixture.
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
A spark plug with a black centre insulator indicates
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have