Science and Technology - Nuclear Technology

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Question - 1

A pressurised water reactor employs pressuriser for the following application

  • A to maintain constant pressure in primary circuit under varying load
  • B to supply high pressure steam
  • C to increase pressure of water in primary circuit
  • D to provide subcooled water at high pressure

Question - 2

The risk of radioactive hazard is greatest in the turbine with following reactor

  • A Pressurised water
  • B boiling water
  • C gas cooled
  • D liquid metal cooled

Question - 3

Pick up the wrong statements

  • A In a heterogeneous or solid-fuel reactor, the fuel is mixed in regular pattern within moderator
  • B Slow or thermal neutrons have energy of the order 0.025 eV
  • C fast neutrons have energies above 1000 eV
  • D fast reactor uses moderator

Question - 4

Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid metal?

  • A Centrifugal
  • B Axial
  • C reciprocation
  • D Electromagnetic

Question - 5

The nuclear power plant at Tarantula has the following reactor

  • A fast breeder
  • B pressurised water
  • C boiling water
  • D sodium graphite

Question - 6

Boiling water reactor uses the following as moderator, coolant and working fluid

  • A ordinary fluid
  • B heavy water
  • C molten lead
  • D hydrogen gas

Question - 7

Ideally the neutron flux in reactor should be

  • A maximum in centre and zero at side
  • B maximum at and zero in centre
  • C uniform throughout
  • D zero throughout

Question - 8

In nuclear fission each neutron that causes fission releases

  • A no new neutron
  • B at least one new neutron
  • C one new neutron
  • D more than one new neutrons

Question - 9

The breeding gain case of thermal breeder reactor as compared to fast breeder reactor is

  • A same
  • B lower
  • C higher
  • D unity

Question - 10

Gas cooled reactor uses following materials as moderator and coolant

  • A graphite, CO2
  • B graphite, air
  • C heavy water, CO2
  • D lead, H2