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  • Electric Generation & Economics BTEE-502 5th Sem B.Tech EE PTU Nov 2018 Paper

Electric Generation & Economics BTEE-502 5th Sem B.Tech EE PTU Nov 2018 Paper

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Download Previous Year PTU University Question  Paper of Electric Generation & Economics BTEE-502 5th Sem B.Tech EE PTU Nov 2018 Paper

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 2018 Paper

SECTION-A

Q1. Write Short Notes on :

   a) Which type of power plants always operate as base load plants and why?

   b) What type of information is obtained from mass curve?

   c) Show that the heat rate curve and incremental rate curve cross each other at a point having minimum heat rate.

  d) What are the objectives of tariff?

  e) Draw a labeled graph showing straight line method of determination of depreciation.

  f) What are the advantages of combined operation of hydro-electric and thermal power plants?

  g) What are the disadvantages of low power factor?

  h) “Higher the values of load factor and diversity factor, lower will be the overall cost per unit generated”. Justify the statement.

 i) Why the problems of disposal, transport and storage of liquid radio-active wastes are extremely significant in case of nuclear power plants?

 j) What is main difference between topping and bottoming cycles used for cogeneration?

                                      SECTION-B

Q2. Attempt any FOUR questions.                                                                    5×4=20

   2. Briefly discuss organization of power sector in India.

   3. Write a note on factors affecting aquatic ecosystems.

   4. A single phase motor connected to 400V, 50 Hz supply takes 31.7A at a power factor of 0.7 Lagging. Calculate the capacitance required in parallel with the motor to raise the power factor to 0.9 lagging. Draw phasor diagram also.

   5. The capital cost of a hydro-power station of 50 MW capacity is Rs 1,000 per kW. The annual depreciation charges are 10% of the capital cost. A royalty of Re 1 per kW per year and Re 0.01 per kWh generated is to be paid for using the river water for generation of power. The maximum demand on the power station is 40 MW and annual load factor is 60%. Annual cost of salaries, maintenance charges etc. is Rs 7,00,000. If 20% of this expense is also chargeable as fixed charges, calculate the generation cost in two part form.

  6. Write a note on selection of plant size and number of units in power plants.

                                     SECTION-C

Q3. Attempt any TWO questions.                              2×10=20

      1. A generation station of 1MW supplied a region which has the following demands :

 

From

To demand (kW)

midnight to 5 am

100

5 am to 6 pm

No-load

6 pm to 7 pm

800

7 pm to 9 pm

900

9 pm to midnight

400

   Neglect transmission line losses and find the following :

   a) Plot the daily load curve and the load duration curve.

   b) Find the load factor, the reserve capacity, plant capacity factor, plant use factor, the hours that the plant has been off and utilization factor.

   8. With the help of a diagram, derive expressions for coordinating equations for economic load dispatch considering transmission losses.

   9. Write a note on long term operational aspects of hydro-thermal power plants.

Electric Generation & Economics BTEE-502 5th Sem B.Tech EE PTU Nov 2018 Paper

Get Started

Section a Electric Generation & Economics 5th Sem B.Tech EE PTU Nov 2018 PAPER

Which type of power plants always operate as base load plants and why?

Explain Which type of power plants always operate as base load plants.

   

What type of information is obtained from mass curve?

Type of information is obtained from mass curve.

 

Show that the heat rate curve and incremental rate curve cross each other at a point having minimum heat rate.

Prove that the heat rate curve and incremental rate curve cross each other at a point having minimum heat rate.

 

What are the objectives of tariff?essity of long term load forecasting?

Objectives of tariff.

 

Draw a labeled graph showing straight line method of determination of depreciation.

Graph showing straight line method of determination of depreciation.

 

What are the advantages of combined operation of hydro-electric and thermal power plants?

Advantages of combined operation of hydro-electric and thermal power plants.

 

What are the disadvantages of low power factor?

Disadvantages of low power factor.

 

“Higher the values of load factor and diversity factor, lower will be the overall cost per unit generated”. Justify the statement.

“Higher the values of load factor and diversity factor, lower will be the overall cost per unit generated”. 

 

Why the problems of disposal, transport and storage of liquid radio-active wastes are extremely significant in case of nuclear power plants?

Explain Why the problems of disposal, transport and storage of liquid radio-active wastes are extremely significant in case of nuclear power plants.

 

What is main difference between topping and bottoming cycles used for cogeneration?

Difference between topping and bottoming cycles used for cogeneration.

 

Why the problems of disposal, transport and storage of liquid radio-active wastes are extremely significant in case of nuclear power plants?

Explain Why the problems of disposal, transport and storage of liquid radio-active wastes are extremely significant in case of nuclear power plants.

 

What is main difference between topping and bottoming cycles used for cogeneration?

Main difference between topping and bottoming cycles used for cogeneration.

Electric Generation & Economics 5th Sem B.Tech EE PTU Nov 2018 Paper 

Section B :Electric Generation & Economics BTEE-502 5th Sem B.Tech EE PTU Nov 2018 Paper

Briefly discuss organization of power sector in India.

Discuss organization of power sector in India.

 

Write a note on factors affecting aquatic ecosystems

Factors affecting aquatic ecosystems.

 

A single phase motor connected to 400V, 50 Hz supply takes 31.7A at a power factor of 0.7 Lagging. Calculate the capacitance required in parallel with the motor to raise the power factor to 0.9 lagging. Draw phasor diagram also.

Single phase motor connected to 400V, 50 Hz supply takes 31.7A at a power factor of 0.7 Lagging. Calculate the capacitance required in parallel with the motor to raise the power factor to 0.9 lagging. 

 

The capital cost of a hydro-power station of 50 MW capacity is Rs 1,000 per kW. The annual depreciation charges are 10% of the capital cost. A royalty of Re 1 per kW per year and Re 0.01 per kWh generated is to be paid for using the river water for generation of power.

Capital cost of a hydro-power station of 50 MW capacity is Rs 1,000 per kW. The annual depreciation charges are 10% of the capital cost. A royalty of Re 1 per kW per year and Re 0.01 per kWh generated is to be paid for using the river water for generation of power. The maximum demand on the power station is 40 MW and annual load factor is 60%. Annual cost of salaries, maintenance charges etc. is Rs 7,00,000. If 20% of this expense is also chargeable as fixed charges, calculate the generation cost in two part form.

 

Write a note on selection of plant size and number of units in power plants.

Selection of plant size and number of units in power plants.

Electric Generation & Economics 5th Sem B.Tech EE PTU Nov 2018 Paper

Electric Generation & Economics 5th Sem B.Tech EE PTU Nov 2018

Get Started

Section c :-Electric Generation & Economics 5th Sem B.Tech EE PTU Nov 2018 paper              

A generation station of 1MW supplied a region which has the following demands :

Generation station of 1MW supplied a region which has the following demands :

 

From

To demand (kW

midnight to 5 am

100

5 am to 6 pm

No-load

6 pm to 7 pm

800

7 pm to 9 pm

900

9 pm to dnight

400

   Neglect transmission line losses and find the following :

   a) Plot the daily load curve and the load duration curve.

   b) Find the load factor, the reserve capacity, plant capacity factor, plant use factor, the hours that the plant has been off and utilization factor.

   

With the help of a diagram, derive expressions for coordinating equations for economic load dispatch considering transmission losses.

Derive expressions for coordinating equations for economic load dispatch considering transmission losses.

  

 Write a note on long term operational aspects of hydro-thermal power plants.

Long term operational aspects of hydro-thermal power plants.

Electric Generation & Economics 5th Sem B.Tech EE PTU Nov 2018 Paper 
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