Electric Generation & Economics BTEE-502 5th Sem B.Tech EE PTU Nov 2016 Paper
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Roll No. ______________
Total No. of Questions : 09
Total No. of Pages : 02
B.Tech.(EE) (2011 Onwards) / (EE) PTU
B.Tech. (Electrical & Electronics) (2011 & 2012 Batch) (Sem.–5)
ELECTRIC GENERATION AND ECONOMICS
Subject Code : BTEE-502 Paper ID : [ A2108]
Time : 3 Hrs. Max. Marks : 60
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions
Electric Generation & Economics BTEE-502 5th Sem B.Tech EE PTU Nov 2016 Paper
SECTION-A
Q1. Write Short Notes on :
1. What are the functions of Central Electricity authority?
2. What is diversity factor? How it is important?
3. What are the effects of low power factor?
4. What is necessity of long term load forecasting?
5. Which type of plant has highest capital cost and why?
6. Compare shunt capacitors and synchronous condensers.
7. What is difference between present worth and capitalised cost?
8. What is equal incremental cost criterion?
9. For which type of countries is hydro-thermal economical?
10. Between which quantities are mass curve and load curve plotted?
SECTION-B
Q2. Attempt any FOUR questions. 5×4=20
2. Write a descriptive note on organization of power sector in India.
3. A 400 V, 3-phase installation draws a current of 50A at 0.8 power factor lagging under full load conditions. It is desired to install a synchronous motor to raise the full load overall power factor to 0.95 lagging. The synchronous motor will drive a 25hp (metric) load at an efficiency of 0.9. Find the kVA and power factor of synchronous motor.
4. Discuss straight line and fixed percentage methods of depreciation.
5. What do you mean by economic comparison of alternators?
6. The load curve of an electrical system is shown below and is linear with the following values at different times of the day. The load is in MW. First row is showing time and second load is showing load.
12 mid night | 5am | 9am | 6pm | 8pm | 10pm | 12 mid night |
50 | 50 | 100 | 100 | 150 | 80 | 50 |