Chapter 11 PROBLEMS, THEIR CAUSES AND REMEDIES OF ENGINE KNOCKING MCQs

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1. If air-fuel mixture burns before spark plug ignites, this fault is called:





2. If a hot spot produces in combustion chamber, this hot spot causes a problem called:





3. Which fuel causes detonation in petrol engine:





4. Maximum vacuum is produced in intake manifold when:




5. Resistance against detonation in petrol engine is measured by:





6. High Cetane rating fuel burns:





7. A burnt air filter element shows the problem of:





8. Cause of excessive fuel consumption is:





9. Knocking quality of petrol is measured in:





10. A faulty high tension lead may cause engine problem:





11. A faulty spark plug may cause engine problem:





12. A cracked distributor cap may cause engine problem:





13. A burnt engine valve may cause engine problem:





14. What problem may exist if compression ratio of engine is increased:





15. What problem may exist if muffler of exhaust system partially blocked:





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