***************
GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–VI • EXAMINATION – WINTER • 2016
Subject Code: 3361906 Date: 25-10-2016
Subject Name: Power Plant Engineering
Time: 10:30 am - 01:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable & Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
***************
Q.1 Answer any seven out of ten. 14
1. Define power plant and factory.
2. State energy sources.
3. State overall specifications of power plants.
4. Define specific steam consumption and rankine cycle heat rate.
5. Explain super critical rankine cycle.
6. State 4 advantages of high pressure boilers.
7. List basic elements of nuclear reactor.
8. Write 2 differences between PWR and BWR used in nuclear power plant.
9. State purposes of Hydro Power project.
10. Explain cost of power in brief.
Q.2 (a) Explain concept of power plant. 03
OR
(a) Write differences between power plant and power station. 03
(b) State line diagram of energy conversion in various power plants. 03
OR
(b) Write short note on national grid . 03
(c) Explain rankine cycle with PV and TS diagram. 04
OR
(c) Explain reheat rankine cycle. 04
(d) Write methods of improving rankine cycle efficiency and explain any one method. 04
OR
(d) Draw schematic diagram of FBC boiler and explain. 04
Q.3 (a) .Classify furnaces and explain pulverized coal furnace. 03
OR
(a) Explain any one system of pulverized coal supply. 03
(b) List various circuits of modern thermal power plant and explain any one . 03
OR
(b) Classify control system used in power plant and explain any one. 03
(c) Explain Lamont boiler 04
OR
(c) Explain Benson boiler. 04
(d) List various parameters and its measuring equipments in power plants. 04
OR
(d) List records maintained in power plant and state its purpose. 04
Q.4 (a) Write essential elements of diesel power plant and their functions. 03
OR
(a) Advantages of gas turbine over diesel engine as prime mover. 03
(b) State conversion systems for solar energy and explain photo voltaic solar power plant 04
OR
(b) Define load curve, demand factor, load factor, plant capacity factor. 04
(c) State and explain methods of improving performance of gas turbine power plant. 07
Q.5 (a) A renkine cycle steam power plant working between 40 bar and 0.4 bar pressure. Steam entering turbine having temperature of 400 deg. Centi. Find cycle efficiency and specific steam consumption. 04
(b) A air standard gas turbine has air 16 deg centi temp. and 1.01 bar pressure entering compressor . Air pressure is increased 5 times in compressor. The air entering temp. at turbine is 810 deg. Centi. Air is expanded to initial pressure Find turbine and compressor work. 04
(c) Write short note on wind power plants. 03
(d) Short note on Super heaters and air pre heaters. 03
***************
No comments:
Post a Comment