Energy Engineering - Jun 2015
Mechanical Engg. (Semester 5)
TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks. 1 (a) List out the different types of fuels used for steam generation. Briefly explain them.(10 marks) 1 (b) With a neat sketch, explain the working of travelling grate stroker.(6 marks) 1 (c) With a neat sketch, explain the working of cyclone burner.(4 marks) 2 (a) With a neat sketch, explain the working of Schmidt- Hartmann boiler.(10 marks) 2 (b) Explain with a neat sketch the working of hyperbolic cooling tower.(5 marks) 2 (c) Determine the height of chimney to get a net drought of 12 mm if the total draught losses are 4mm. The temperature of air is 25°C and the temperature of chimney gases is 300°C. The mass of air used per kg of fuel is 18 kg. One kh of air occupies a volume of 0.7734 m3 at NTP.(5 marks) 3 (a) Draw the schematic diagram of DG power plant. Mention the function of each component of the plant.(10 marks) 3 (b) Explain the different methods used for starting diesel engines.(6 marks) 3 (c) Write a note an filters used in intake system of diesel engine.(4 marks) 4 (a) What is surge tank? What are its functions? List out the types of surge tanks used in hydroelectric power plant.(6 marks) 4 (b) What do you mean by water hammer? How it will be formed?(4 marks) 4 (c) The run-off data of a river at a particular site is tabulated below.
|Month||Mean discharge millions of m3/month||Month||Mean discharge millions of m3/month|
i) Draw the hydrograph and find the mean flow
ii) Draw the flow duration curve
iii) Find the power in MW available at mean flow if the head available is 100 m and overall efficiency of generation is 80%.(10 marks) 5 (a) With a neat sketch, explain the working of Fast Breeder Reactor State its advantages and disadvantages.(10 marks)
Write a note on:
5 (b) i) Radiation hazards.(5 marks) 5 (b) ii) Radioactive waste disposal.(5 marks) 6 (a) What is the difference between a pyrheliometer and a pyranometer? Describe the principle of Angstrom Pyrheliometer.(6 marks) 6 (b) What is the principle of photovoltaic power generation? With a neat sketch, explain the working of photovoltaic cell.(6 marks) 6 (c) Determine extra-terrestrial normal radiation and extra-terrestrial radiation on a horizontal surface on February 15 at 2 pm solar time for 40° N latitude. Also determine the total solar radiation on the extra-terrestrial horizontal surface for the day.(8 marks) 7 (a) Describe the tidal energy harnessing by 'Two basin with liked basin' method.(6 marks) 7 (b) List out the problems associated with OTEC power plant.(6 marks) 7 (c) With a schematic diagram, explain the working of vapour dominated geothermal power plant.(8 marks) 8 (a) Clearly describe the production of oxygen from photosynthesis process.(6 marks) 8 (b) With a neat sketch, explain the working of Indian type bio gas plant.(8 marks) 8 (c) With a neat sketch, explain the working of fluidized bed gasifier.(6 marks)