If after some use the lower part, electrodes and beathing space of a spark plug are found coated by deposits of soot and carbon, the conclusion will be

Heat Engines Mcqs
BILAL KHATTAK0

A.Spark plug is of proper heat rating
B.Composition of mixture in the engine is correct
C.Spark plug is of too high heat rating
D.Spark advance is incorrect
E.Spark plug is short circuited

Related Mcqs:

  1. In S.I. engine if the spark plug deposit indicates black coating of soot, it therefore indicates that the engine has been generally operating on
  2. As the gap between the electrodes of the spark plug increases
  3. For a spark plug M 14 x 1.25 the last figure 1.25 stands for
  4. In a S.I. engine burned white deposit on spark plug with molten globules indicates that the engine has been generally operating on
  5. In spark plug the gap between the electrodes is
  6. Which spark plug will have lower heat rating
  7. The knocking in S.I. engines is characterised by sudden auto-ignition of the change
  8. Which of the following part is not needed on spark ignition engines using magneto ignition?
  9. A hot plug has a
  10. In a multi-cylinder engine, missing in one cylinder is likely to result from

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