100 TOP Nuclear Power Plants Multiple choice Questions and Answers pdf free dwonload

11.    Breeder reactor has a conversion ratio of
(a) unity
(b) more than unity
(c) less than unity
(d) zero
(e) infinity.
Ans: b

12.    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.
Ans: b

13.    Fast breeder reactor uses
(a)    boiler
(b)    direct cycle of coolant system
(c)    double circuit system of coolant cycle
(d)    multi pass system
(e)    single circuit system.
Ans: c

14.    One gram of uranium will produce energy equivalent to approximately
(a)    1 tonne of high grade coal
(b)    4.5 tonnes of high grade coal
(c)    10 tonnes of high grade coal
(d)    100 tonnes of high grade coal
(e)     1000 tonnes of high grade coal.
Ans: b

15.  Which of the following nuclear reactor does not need a heat exchanger for generation of steam
(a) gas cooled    
(b) liquid metal cooled
(c) pressurised water
(d) boiling water
(e) none of the above.
Ans: d

16.  The number of isotopes of hydrogen are
(a) 1
(b) 2
(c) U
(c) 3
(e) 0
Ans: c

17.    The commonly used material for shielding is
(a)    lead or concrete
(b)    lead and tin
(c)    graphite or cadmium
(d)    thick galvanized sheets
(e)    black carbon papers.
Ans: a

18.    The main interest of shielding in nuclear reactor is protection against
(a)     X-rays
(b)     infra-red rays
(c)    a, P, and y rays
(d)    neutrons and gamma rays
(e)    electrons.
Ans: d

19.    Reflector in nuclear plants is used to
(a)    return the neutrons back into the core
(b)    shield the radioactivity completely
(c)    check polllution
(d)    conserve energy
(e)    is not used.
Ans: a

20.    The energy required to be applied to a radioactive nucleus for the emission of a neutron is
(a) 1 MeV
(b) 2.4 MeV
(c) 4.3 MeV
(d) 7.8 MeV
(e) 20 MeV.
Ans: d

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