ME 2034/ME 708/ME 1004 - Nuclear Engineering May/June 2013 Question Paper (Scan)

[SriNee]

Anna University , Chennai

Question Paper Code: 21550

B.E/B.Tech.. DEGREE EXAMINATION, MAY/JUNE 2013.

Seventh Semester

Mechanical Engineering

ME 2O34 / ME 708/ ME 1004- NUCLEAR ENGINEERING

(Regulation 2008)

(Common to PTME 2034 — Nuclear Engineering for B.E.(Part-Time) Sixth Semester

— Mechanical Engineering — Regulation 2009)

Time : Three hours
Maximum: 100 marks
Answer ALL questions.
PART A—(10x2=20marks)
1. What is called mass defect? Give its significance.
2. Define radio activity.
3. Write the difference between Fusion and Fission
4. Why beryllium is considered best and most economical cladding material?
5. State the stages involved in reprocessing of spent fueL
6. What is the condition in selecting a good solvent for extraction?
7. What is called doubling time in breeding reactor?
8. Define critical size of the reactor.
9. Classify the nuclear waste on the basis of intensity of radiation and mention the range of each.
10. State the safety measures to be taken for safeguarding the people working in nuclear power plant.


PART B —(5 x 16=80 marks)
11. (a) (i) Explain the working principle of a fast breeder reactor with a neat sketch (10)
(ii) Why shielding of a reactor is necessary? Write desirable properties of a good shielding material. (6)

Or

(b) (i) Discuss the steps involved in the design of fast breeder reactors. (8)
(ii) Explain the modes of heat transfer in nuclear reactors. (8)

12. (a) (i) Define half life, mean life and decay constant. What are their significance in nuclear engineering? (8)
(ii) What is neutron flux? Briefly explain how the neutron cross-section varies with the neutron energy. (8)

Or

(b) (i) What is the difference between atomic number and mass number?(4)
(ii) Explain the different radioactive emissions and their effects on parent atom. (12)

13. (a) (i) What do you understand by nuclear fission? What are the essential requirements to cause nuclear fission? (8)
(ii) Draw the layout and explain the stages in preparation of nuclear fuel for the reactor. (8)

Or

(b) (i) Explain the difference between controlled and uncontrolled chain reaction. (8)
(ii) Name the common uranium fuels and explain their properties. (8)

14. (a) Explain the various stages reprocessing of irradiated fuel. (16)

Or

(b) Explain the general principle of solvent extraction and write the equipment's used for it. (16)

15. (a) (i) Outline the nuclear fuel cycle and explain the different types of wastes coming out at different stages. (10)
(ii) Explain the different radiation hazards. (6)

Or

(b) Discuss the methods used for treating the low level solid waste, high level liquid waste and radio active gases such as Krypton etc. (16)

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