Related Questions

The type of pump used for the recirculation of molten sodium coolant in liquid metal cooled reactor is a/an __________ pump.
A Electromagnetic
B Reciprocating
C Centrifugal
D Volute
Molten sodium is used as a coolant in a fast breeder reactor, because of its
A Excellent moderating properties
B Neutron breeding capability
C Faster heat removal capability from the core
D Capability to increase the reaction rate in the core
Circulation of liquid metal (i.e. molten sodium) in a liquid metal cooled nuclear reactor is done by a/an __________ pump.
A Electromagnetic
B Axial flow
C Diaphragm
D Reciprocating
Molten sodium (as a coolant in fast breeder reactor)
A can't attain high temperature at normal pressure
B is not at all corrosive even at a higher temperature
C is highly radioactive at elevated temperature & can cause explosion when it comes in contact with air or water
D none of these
Secondary cooling circuit is a must in molten sodium cooled fast breeder reactor for
A Achieving high degree of superheat in the steam
B Faster heat removal rate from the core
C Lowering the coolant circulation pressure
D Avoiding the mixing of water with radioactive sodium, as it may cause explosion
Liquid metal (e.g, . molten sodium) is preferred as a coolant in case of a/an __________ reactor.
A Homogeneous
B Graphite moderated
C Fast breeder
D Enriched uranium (3% U-235) fuelled
একটি পানিপূর্ণ কুয়ার গভীরতা 20m ও ব্যাস 2 m. কুয়াটিকে পানি শূণ্য করার জন্য 5 HP এর একটি পাম্প লাগানো হল। অর্ধেক পানি তোলার পর পাম্পটি নষ্ট হয়ে গেল। বাকি পানি তোলার জন্য একই ক্ষমতা সম্পন্ন আর একটি পাম্প লাগানো হল। প্রথম পাম্প দ্বারা সম্পাদিত কাজের পরিমান নির্ণয় কর।(The depth and diameter of a water filled well are 20 m and 2 m respectively. An engine of 5 HP is attached to pump out the water. The pump was ruined after emptying half of the water. Then another pump of same capacity was attached to pump out rest of the water. Determine the work done by first pump.) 
A 2.54 × 104 J
B 1.44 × 104 J
C 2.34×104 J
D 1.54 × 104 J
E 1.54 ×104 J
Use of molten metal as a coolant in fast breeder reactor helps in
A Rapid heat transfer from the core
B Accelerating the reaction rate in the core
C Breeding neutrons
D Accelerating the neutrons
In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.
A Semi-batch
B Tubular
C Batch
D Back-mix
The breeding gain in case of thermal breeder reactor as compared to fast breeder reactor is
A Same
B Lower
C Higher
D Unity

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