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




16.Which of the following statement is correct regarding normal cetaine?
A. It is a standard fuel used for knock rating of diesel engines.
B. Its chemical name is normal-hexadecane.
C. It has long carbon chain structure.
D. all ofthe above

17.Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
A. high neutron absorption cross-section
B. low moderating efficiency
C. high neutron scatter cross-section
D. low neutron absorption cross-section

18.As compared to air standard cycle, in actual working, the effect of variation in specific heats is to
A. increase maximum pressure and maximum temperature
B. reduce maximum pressure and maximum temperature
C. increase maximum pressure and decrease maximum temperature
D. decrease maximum pressure and increase maximum temperature

19.The ignition quality of petrol is expressed by
A. cetane number
B. octane number
C. calorific value
D. all of these

20.The fuel valve in a four stroke cycle diesel engine
A. opens at 15� after top dead centre and closes at 20� before bottom dead centre
B. opens at 15� before top dead centre and closes at 20� after top dead centre
C. opens at top dead centre and closes at bottom dead centre
D. may open and close anywhere

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