In boiling water reactor, moderator is__________________? - PakMcqs

Related Mcqs:

1. Boiling water reactor uses the following as moderator, coolant and working fluid________________?

   A. ordinary fluid B. heavy water C. molten lead D. hydrogen gas E. none of the above...

2. Gas cooled reactor uses following materials as moderator, and coolant____________________?

   A. graphite, C02 B. graphite, air C. heavy water, C02 D. lead, H2 E. concrete, N2...

3. The energy produced by a thermal reactor of same size as a breeder reactor is__________________?

   A. almost same B. slightly more C. slightly less D. much less E. much more....

4. Boiling water reactor employs__________________?

   A. boiler B. direct cycle of coolant system C. double circuit system of coolant cycle D. multi pass system E. single circuit system...

5. The coolant used in boiling water reactor is________________?

   A. Co2 B. pressurised water C. mixture of water and steam D. liquid metal E. mercury...

6. A boiling water reactor uses following as fuel________________?

   A. enriched uranium B. plutonium C. thorium D. U E. natural uranium....

7. The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is________________?

   A. same B. lower C. higher D. unity E. higher/lower depending on the size of reactor...

8. Moderator in nuclear plants is used to__________________?

   A. reduce temperature B. extract heat from nuclear reaction C. control the reaction D. cause collision with the fast moving neutrons to reduce their speed E. moderate the radioactive pollution...

9. The most commonly used moderator in nuclear plants is___________________?

   A. heavy water B. concrete and bricks C. graphite and concrete D. deutrium E. graphite...

10. Which of the following is more appropriate for a moderator. One which_________________?

    A. does not absorb neutrons B. absorbs neutrons C. accelerates neutrons D. eats up neutrons E. regenerates neutrons...