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Consider the following statements:
1. Gas cooled thermal reactors use CO2 or helium as coolant and require noseparate moderator.
2. Fast reactors use heavy water as moderator and coolant.
3. Liquid metal fast breeder reactors use molten sodium as coolant.
4. In CANDU type reactors heavy water is used as moderator.Of these correct statements are 
  • a)
    1 and 3
  • b)
    2 and 4
  • c)
    3 and 4
  • d)
    1 and 2
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following statements:1. Gas cooled thermal reactors use C...
1. Gas cooled thermal reactors use CO2 or helium as coolant and require graphite as separate moderator.
2. Fast reactors use no moderator
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Most Upvoted Answer
Consider the following statements:1. Gas cooled thermal reactors use C...


Gas Cooled Thermal Reactors:
- Gas cooled thermal reactors use CO2 or helium as coolant.
- They do not require a separate moderator.

Fast Reactors:
- Fast reactors use heavy water as coolant.
- Heavy water also acts as a moderator in fast reactors.

Liquid Metal Fast Breeder Reactors:
- Liquid metal fast breeder reactors use molten sodium as coolant.
- Molten sodium helps transfer heat from the reactor core.

CANDU Type Reactors:
- In CANDU type reactors, heavy water is used as a moderator.
- Heavy water allows for the moderation of neutrons in the reactor core.

Therefore, the correct statements are 3 and 4, as liquid metal fast breeder reactors use molten sodium as coolant, and in CANDU type reactors heavy water is used as a moderator.
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Consider the following statements:1. Gas cooled thermal reactors use CO2 or helium as coolant and require noseparate moderator.2. Fast reactors use heavy water as moderator and coolant.3. Liquid metal fast breeder reactors use molten sodium as coolant.4. In CANDU type reactors heavy water is used as moderator.Of these correct statements area)1 and 3b)2 and 4c)3 and 4d)1 and 2Correct answer is option 'C'. Can you explain this answer?
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Consider the following statements:1. Gas cooled thermal reactors use CO2 or helium as coolant and require noseparate moderator.2. Fast reactors use heavy water as moderator and coolant.3. Liquid metal fast breeder reactors use molten sodium as coolant.4. In CANDU type reactors heavy water is used as moderator.Of these correct statements area)1 and 3b)2 and 4c)3 and 4d)1 and 2Correct answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2025 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Consider the following statements:1. Gas cooled thermal reactors use CO2 or helium as coolant and require noseparate moderator.2. Fast reactors use heavy water as moderator and coolant.3. Liquid metal fast breeder reactors use molten sodium as coolant.4. In CANDU type reactors heavy water is used as moderator.Of these correct statements area)1 and 3b)2 and 4c)3 and 4d)1 and 2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements:1. Gas cooled thermal reactors use CO2 or helium as coolant and require noseparate moderator.2. Fast reactors use heavy water as moderator and coolant.3. Liquid metal fast breeder reactors use molten sodium as coolant.4. In CANDU type reactors heavy water is used as moderator.Of these correct statements area)1 and 3b)2 and 4c)3 and 4d)1 and 2Correct answer is option 'C'. Can you explain this answer?.
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