IC Engines and Nuclear Power Plants - Data Intensity 4 Multiple Questions and Answers.




21.In petrol engines, advancing of the spark timing will __________ the knocking tendency.
A. not effect
B. decrease
C. increase
D. none of above

22.The knocking tendency in compression ignition engines for a given fuel will be
A. enhanced by decreasing compression ratio
B. enhanced by increasing compression ratio
C. dependent on other factors
D. none of the above

23.In a four stroke cycle engine, the sequence of operations is
A. suction, compression, expansion and exhaust
B. suction, expansion, compression and exhaust
C. expansion, compression, suction and exhaust
D. compression, expansion, suction and exhaust

24.Diesel as compared to petrol is
A. highly ignitable
B. more difficult to ignite
C. less difficult to ignite
D. none of these

25.The probability of knocking in diesel engines is increased by
A. high self ignition temperature
B. low volatility
C. higher viscosity
D. all of these

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