Related Questions

A pressurised water reactor (PWR) uses pressurised water as a
A Coolant
B Working fluid in power turbine
C Moderator
D None of these
Pressure in a Pressurised Water Reactor (PWR) is used for
A Maintaining constant pressure in the primary cooling circuit under varying loads
B Superheating the steam
C Pressurising the water in the primary coolant circuit
D None of these
In a pressurised water reactor (PWR), the
A Fuel is natural uranium and heavy water acts both as moderator & coolant
B Coolant water boils in the core of the reactor
C Coolant water is pressurised to prevent bulk boiling of water in the core
D Use of moderator is not required
Lurgi coal gasifier is a pressurised __________ bed reactor.
A Moving
B Fixed
C Fluidised
D Entrained
For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness?
A Hemispherical
B Ellipsoidal (2 : 1)
C Conical
D Flat plate
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
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
Which of the following gases has very high neutron capture cross-section, making it unsuitable as a coolant in nuclear reactor?
A N2
B He
C CO2
D H2
__________ gas is normally not used as a coolant in a nuclear reactor, because of its high neutron capture cross-section.
A Nitrogen
B Hydrogen
C Helium
D Carbon dioxide
Which is used as a coolant in nuclear reactor due to its high capture cross-section?
A H2
B N2
C He
D CO2

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