Power Plant Engineering - Study Mode

[#86] Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid metal
Correct Answer

(D) Electromagnetic

Explanation

Solution: Electromagnetic type of pump is used in liquid metal cooled reactor for circulation of liquid metal

[#87] Artificial radioactive isotopes find application in
Correct Answer

(D) Medical field

Explanation

Solution: Artificial radioactive isotopes are formed when an atom is bombed with an accelerator or exposing it to slow moving neutrons in a nuclear reactor. Artificial radioactive isotopes find application in Medical field

[#88] U 235 will undergo fission by
Correct Answer

(C) Either fast or slow neutrons

Explanation

Solution: U 235 will undergo fission by either fast or slow neutrons. For fission of uranium-235, the predominant radioactive fission products include isotopes of iodine, caesium, strontium, xenon and barium.

[#89] U 238 will undergo fission by
Correct Answer

(A) High energy (fast) neutrons alone

Explanation

Solution: U 238 will undergo fission by high energy (fast) neutrons alone. The much more abundant uranium-238 does not undergo fission and therefore cannot be used as a fuel for nuclear reactors. However, if uranium-238 is bombarded with neutrons it absorbs a neutron and is transformed into uranium-239.

[#90] A nuclear unit becoming critical means
Correct Answer

(D) Chain reaction that causes automatic splitting of the fuel nuclei has been established

Explanation

Solution: A nuclear unit becoming critical means Chain reaction that causes automatic splitting of the fuel nuclei has been established when the reactor is in a configuration such that one neutron from each atom fissioned causes another fission and then the reactor is said to be critical