B.E. (Mechanical Engineering)
Time : 2½Hours
Max. Marks : 70
Instructions to the candidates:
1) Solve Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8 and Q.9 or Q.10
2) Use of thermodynamic table and charts are permitted.
3) Assume suitable data, if necessary.
4) Figures to right indicate full marks.
5) Use of non-programmable electronic calculator is allowed.
Q1) a) What are the factors you will consider for locating the conventional base load thermal power plant? [5M]
b) Define condenser efficiency and vacuum efficiency. [5M]
Q2) a) What is FBC? Explain its stages with neat sketch. [5M]
b) The following data were obtained from the test of a surface condenser- Condenser vacuum =711 mm of Hg; Hot well temp = 32ºC; intel temp of circulating water=12ºC; Outlet temp of circulating water =28ºC; Barometer
reading =760 mm of Hg. Compute Vacuum and Condenser efficiencies.[5M]
Q3) a) Write short notes on Nuclear power plant. State its merits and demerits.[5M]
b) Explain with neat sketch hydrograph and hydrological cycle. [5M]
Q4) a) Explain with neat sketch working of BWR plant. [5M]
b) Write a short note on Flow duration curve. [5M]
Q5) a) What are the advantages and disadvantages of Diesel power plant? [8M]
b) List the methods of improving efficiency and specific output of the gas turbine. [8M]
Q6) a) In a gas turbine plant, the air is compressed in a single stage compressor from 1 bar to 9 bar and from initial temperature of 300 K. the same air is then heated to a temperature of 800 K and then expanded in the turbine.
The air is then reheated to a temperature of 800 K and then expanded in the second stage turbine. Find the maximum power that can be obtain from the installation, if the mass of air circulated per second is 2 kg. Take Cp=1 kJ/kgK. [10M]
b) Discuss the losses related to diesel power plant. [6M]
Q7) a) Write short notes on; [10M]
i) Solar flat plate collector
ii) Geothermal power plant
b) Discuss the parameters to be considered for site selection of wind power plant [6M]
Q8) a) What are the different challenges in commercialization of non-conventional power plant? [8M]
b) Discuss any two types of the horizontal axis wind mills with neat sketch. [8M]
Q9) a) State the various protective equipment and explain the working of switch gear in power plant. [8M]
b) A power supply agency, supplies the following load to different consumers, its details given below; [10M]
|Sr. No.||Particulars||Domestic |
| Commercial |
Q10)a) Write short notes on: [8M]
i) Circuit breaker
ii) Control system.
b) A power Station has the following daily load cycle: [10M]
|Time in Hours||6-8||8-12||12-16||16-20||20-24||24-6|
|Load in MW||20||40||60||20||50||20|