GTU BE 2019 Summer Question Papers || Gujarat Technological University
Subject Code: 151906
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER- V(OLD) EXAMINATION - SUMMER 2019
Date: 10/06/2019
Subject Name: Conventional Power Engineering
Time: 02:30 PM TO 05:00 PM
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) Draw the neat sketch of Layout of steam power plant. Explain the main circuits of steam power plant. | 07 |
| (b) Describe with a neat sketch the construction and working of a Francis turbine. | 07 | |
| Q.2 | (a) Derive the equation of efficiency of Ideal Brayton cycle of gas turbine. | 07 |
| (b) Explain the different factors to be considered for site selection of steam power plant. | 07 | |
| OR | ||
| (b) A steam power plant is supplied with dry saturated steam at a pressure of 12 bar and exhausts into a condenser at 0.1 bar. Calculate the Rankine cycle efficiency. --- Content provided by FirstRanker.com --- At 12 bar: hf = 798.4 kJ/kg hg = 1984.3 kJ/kg sf = 2.215 kJ/kg-K sg = 4.304 kJ/kg-KAt 0.1 bar: hf = 191.8 kJ/kg hg = 2393 kJ/kg sf = 0.649 kJ/kg-K sg = 7.502 kJ/kg-K | 07 | |
| Q.3 | (a) What is the compounding of steam turbine? Why is it necessary? State the different types of compounding of Impulse turbine. | 07 |
| (b) Explain the working of Pressurized water reactor with neat sketch. | 07 | |
| OR | ||
| (b) Explain the governing of Pelton wheel with neat sketch. | 07 | |
| Q.4 | (a) Classify the steam turbine. | 07 |
| (b) In a De-Lavel turbine, the steam enters through a nozzle with a velocity of 500 m/s and at an angle of 20° to the direction of motion of the blade. The blade speed is 200m/s and the exit angle of the moving blade is 25°. Find the inlet angle of the moving blade, exit velocity of steam and its direction and work done for 10 kg of steam. | 07 | |
| Q.5 | (a) State the advantages and disadvantages of Diesel Power Plant. | 07 |
| OR | ||
| (b) A simple closed cycle gas turbine plant gets air at 1 bar and 15°C, and compresses it to 5 bar and then heats it to 800°C in heating chamber. The hot air expands in a turbine back to 1 bar. Find the power produced per kg of air supplied per second. Take Cp for the air as 1 kJ/kgK. | 07 | |
| Q.5 | (a) Explain in details about the different cost associated with power plant. | 07 |
| (b) Explain working of the open cycle gas turbine with intercooling with the help of line sketch diagram. | 07 | |
| OR | ||
| (a) Why engine cooling is required? State the types of engine cooling system. | 07 | |
| (b) Describe the function of different components of Nuclear reactor. | 07 | |
| (a) Define (1) Demand factor (2) Diversity factor (3) Plant capacity factor (4) Load factor (5) Peak load (6) Average load (7) Plant use factor. | 07 |
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