Power Plant Engineering - Study Mode

[#91] Reactors for propulsion applications use
Correct Answer

(B) Molten lead

Explanation

Solution: Molten lead can be used as the primary coolant because lead and bismuth have low neutron absorption and relatively low melting points. Neutrons are slowed less by interaction with these heavy nuclei and therefore help make this type of reactor a fast-neutron reactor.

[#92] Reactors designed for propulsion applications are designed for
Correct Answer

(B) Enriched uranium

Explanation

Solution: Reactors designed for propulsion applications are designed for Enriched uranium

[#93] Reactors for propulsion applications are designed for
Correct Answer

(C) Enriched uranium

Explanation

Solution: Reactors designed for propulsion applications are designed for Enriched uranium

[#94] The size of the reactor is said to be critical when
Correct Answer

(A) Chain reaction can be initiated

Explanation

Solution: When the atom-splitting reactor of a nuclear power plant is operating normally, it is said to be “critical” or in a state of “criticality.” Criticality means that a reactor is controlling a sustained fission chain reaction, where each fission event releases a sufficient number of neutrons to maintain an ongoing series of reactions. This is the normal state of nuclear power generation.

[#95] Which of the following statement is correct regarding the features of a Breeder reactor?
Correct Answer

(D) All of the above

Explanation

Solution: Breeder reactor is a nuclear reactor that produces more fissionable material than it consumes to generate energy. This special type of reactor is designed to extend the nuclear fuel supply for electric power generation. It produces more fuel than it consumes It requires highly enriched fuel It requires liquid sodium metal as moderator