Name of the College : SREE CHAITANYA COLLEGE OF ENGINEERING
University : JNTUH
Department : Mechanical Engineering
Subject Code/Name : 07A70308/POWER PLANT ENGINEERING
Year/Sem : IV/I
Website : scce.ac.in
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/scce.ac.in/4912-07A70308-POWERPLANTENGINEERING.pdf
Power Plant Engineering Question Paper :
Code No: 07A70308
R07 Set No. 2
IV B.Tech I Semester Examinations,December 2011
Related : Sree Chaitanya College Of Engineering 07A70304 Instrumentation & Control Systems B.Tech Question Paper : www.pdfquestion.in/4914.html
Common to Mechanical Engineering, Mechatronics
Time: 3 hours
Max Marks: 80
Answer any FIVE Questions :
All Questions carry equal marks :
1. (a) With a neat diagram explain breeder reactor.
(b) Compare nuclear power plants with thermal power plants. [8+8]
2. (a) What are the advantages of reheating in a gas turbine power plant?
(b) How regeneration improves the thermal efficiency of a simple open gas turbine? [6+10]
3. (a) What is fuel cell?
(b) Explain hydrogen-oxygen cell. [6+10]
4. What do you understand by `output – handling of coal’? What are the different methods of output coal handling? Discuss their relative merits and demerits. [16]
5. (a) Explain
i. Plant use factor
ii. Plant capacity factor
iii. load factor.
(b) A central power station has annual factors as follows: Load factor =60%
Capacity factor= 40%
Use factor=50%
Power station has a maximum demand of 15MW. Determine
i. Annual energy production
ii. Reverse capacity over and above peak load
iii. Hours per year not in service. [8+8]
6. Give the lay out of a diesel power plant and explain clearly the principle of working. [16]
7. What are the factors considered in selecting a prime-mover for a hydro electric power plant? [16]
8. (a) Explain the factors which are responsible for efficient design of boiler.
(b) What are the major advantages of high pressure boilers in modern thermal power plant? [10+6]
Code No: 07A70308
R07 Set No. 4
1. (a) Give the classification of coal and their characteristics.
(b) Explain different stages in coal desulphurization process. [6+10]
2. What are the different types of reactors commonly used in nuclear power stations? Describe the fast breeder reactor with a diagram. [16]
3. (a) What are the important coal properties relevant to the thermal power plant?
(b) What is a coal – oil mixture and how it is prepared? What are the merits of coal oil mixture as a boiler fuel? [6+10]
4. (a) Differentiate flat plate collectors and focusing collectors.
(b) Describe flat plate collector with a diagram. [8+8]
5. (a) What do you mean by depreciation? Enumerate and explain briefly various methods used to calculate the depreciation cost.
(b) What are the effects of SO2, NO2 and hydrocarbons on the human and crop lives? [8+8]
6. (a) Describe advantages and disadvantages of hydroelectric power plant.
(b) What is spill way? Explain any two spill ways. [8+8]
7. A gas turbine plant is designed to develop 5 MW power. The inlet pressure and temperature of the air to the compressor an 1 bar and 300C. The pressure ratio of the cycle is 5. A reheater is used between two turbines at a pressure of 2.24 bar. Calculate the overall efficiency of the cycle and mass flow rate assuming the following data
Neglet the mass of the fuel. [16]
8. (a) Explain the important functions of a lubricating system.
(b) Explain the necessity of the cooling system in a diesel engine. What are the methods of cooling the engine? [6+10]
Power Plant Engineering :
1. (a) What are different types of fans used for producing draught? What is a balanced draught?
(b) What is a pressurised furnace? What are its characteristic features? [8+8]
2. Discuss the advantages and disadvantages of horizontal and vertical axis wind mills with neat sketches. [16]
3. (a) Write short notes on :
i. Inter cooler
ii. Heat exchanger
(b) With the aid of neat sketches briefly describe different arrangements of power plant. [8+8]
4. What are the basic energy resources in india? List out their capacities in different regions. [16]
5. (a) Why supercharging is necessary is diesel plant? What are the methods used for super – charging the diesel engine?
(b) What are the advantages of super charging? [10+6]