Pune University BE Previous Exam Paper Renewable Energy System

B.E. (Electrical Engineering) RENEWABLE ENERGY SYSTEM (2008 Pattern) (Elective – IV) (Sem. – II)

Time: 3 Hours]                                                                                              [Max. Marks :100

Instructions to the candidates:

1)            Answers to the two sections should be written in separate answer books.

2)             Solve Q1 or Q2, Q3 or Q4, Q5 or Q6 from Section -1 and Solve Q7 or Q8, Q9 or Q10, Q11 or Q12 from Section – II.

3)            Figures to the right indicate full marks.

4)            Neat diagrams must be drawn wherever necessary.

5)            Assume suitable additional data, if necessary.

SECTION – I

Q1) a) Explain distributed generation with fossil fuels and describe any one emerging technologies for distributed generation.                                                                                [8]

b) List different types of fuel cells, and explain any one.                                     [8]

OR

Q2) a) Write a note on, “concentrating solar power technologies”.                              [8]

b) Explain combined heat and power, also its energy efficiency measures.

[8]

Q3) a) Write a note on, types of wind turbines.                                                                [8]

b) Give simple estimates of wind turbines energy.                                             [10]

OR

Q4) a) List the methods and explain how maximum power can be achieved by controling speed.                                                                                                         [10]

b) Write a note on, environmental impacts of wind turbines.                              [8]

 

Q5) a)

Explain the solar spectrum.

[8]

b)

Write a note on, “Total clear sky insolation on a collecting surface”. [8]

  OR  

Q6) a)

Write a note on “Altitude angle of the sun at solar noon”

[8]

b)

Explain the, solar radiation measurement.

[8]

  SECTION – II  

Q7) a)

Explain the generic photovoltaic cell and the simplest equivalent circuit

 

for a photovoltaic cell.

[8]

b)

How does shading impacts on I-V curves of a PV module, and role of

 

by pass diode and blocking diode.

[8]

  OR  

Q8) a)

Explain, from cells to a module, and from module to arrays.

[8]

b)

Explain single-crystal czochralski silicon technology.

[8]

Q9) a)

Explain the grid-connected PV systems and its interfacing with the

 

utility.

[10]

b)

Explain the stand alone PV systems, with example.

[8]

  OR  

Q10)a)

Explain the capacity factors for PV grid-connected systems and grid-

 

connected system sizing.

[10]

b)

Explain the, Bi-directional metering and list its advantages.

[8]

Q11)a)

Explain, Microturbine Generation.

[8]

b)

Write a note on, Global warming and climate change.

[8]

  OR  

Q12)a)

Explain, wave energy conversion systems.

[8]

b)

Write a note on, “Nuclear waste disposal”.

[8]

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