IC Engines and Nuclear Power Plants - Data Intensity 3 Multiple Questions and Answers.




26.The knocking tendency in spark ignition engines may be decreased by
A. controlling the air-fuel mixture
B. controlling the ignition timing
C. controlling the exhaust temperature
D. reducing the compression ratio

27.Alpha-methyl-naphthalene (C11 H10) has a cetane number of
A. 0
B. 50
C. 100
D. 120

28.In a petrol engine, the mixture has the lowest pressure at the
A. beginning of suction stroke
B. end of suction stroke
C. end of compression stroke
D. none of these

29.Which of the following does not relate to a spark ignition engine ?
A. Ignition coil
B. Spar kplug
C. Carburettor
D. Fuel injector

30.The increase in intake temperature of internal combustion engines will ___ efficiency.
A. have no effect on
B. increase
C. decrease
D. none of above

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