IC Engines and Nuclear Power Plants - Data Intensity 1 Multiple Questions and Answers.




6.Nuclear reactors are used
A. to produce heat for thermoelectric power
B. to produce fissionable material
C. to propel ships, submarines, aircrafts
D. all of these

7.A moderator generally used in nuclear power plants is
A. graphite
B. heavy water
C. concrete
D. graphite and concrete

8.The predominent isotope of the naturally occuring element is
A. U235
B. U238
C. Pu233
D. Pu239

9.In a four stroke cycle petrol engine, the charge is ignited at
A. 30� before top dead centre
B. 30� after top dead centre
C. 30� before bottom dead centre
D. 30� after bottom dead centre

10.A moderator, in nuclear power plants, is a medium introduced into the fuel mass in order to
A. slow down the speed of fast moving neutrons
B. control the reaction
C. reduce the temperature
D. extract heat from nuclear reaction

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