Manonmaniam Sundaranar University (MSU) 2010 B.Sc Electronics Manonmanium Sundaranar University - university paper

Code No. 1343 Sub. Code: 3EL63A
B.Sc. DEGREE EXAMINATION, APRIL 2010
ELECTRONICS
Sixth Semester
Optional - RENEWABLE ENERGY SOURCES
(For those who joined in July 2006 and 2007)
Time: three Hours Max. Marks: 100
part -A (10 x one = 10 Marks)
ans ALL the ques. select the accurate ans
1. The _ is/are examples of conventional
energy sources,
(a) oil (b) gas
(c) hydro (d) All of these
2. The is/are examples of renewable
energy sources.
(a) solar (b) wind
(c) geothermal (d) all of these
3. Energy is radiated by sun as __ waves,
(a) ultrasonic (b) electromagnetic
(c) sound (d) none of these
4. Solar power is expressed in terms of
(a) m2 (b) W/m2
(c) W (d) Km2
5. Winds are caused by
(a) solar heating (b) rain
(c) thunder (d) lightening
is considered
6. An avg. speed of
favourable for setting wind plant,
(a) four m/s (b) five m/s
(c) 10 m/s (d) 25 m/s
7. Merits of wave energy is/are
(a) Renewable source (b) discontinuous
(c) low energy density
(d) low power density
8. The rise and fall of tidal water is maximum near
(a) sea shore (b) river mouth
(c) Both (a) and (b) (d) either (a) or (b)
9. __ is a process of generating bio gas from bio mass
(a) Fermentation (b) Pyrolysis (c) Thermal agitation (d) Photo synthesis
10. Biogas is formed due to anaerobic digestion and has advantages such as
(a) cheaper
(b) secondary renewable energy
(c) both (a) or (b)
(d) either (a) or (b)
part - B (5 x six = 30 Marks)
ans ALL the ques. choosing either (a) or (b)
11. (a) What is meant by renewable energy? provide example.
(or)
(b) Write short notes on availability of non­commercial energy source in India
12. (a) define the principle of solar radiation,
(or)
(b) discuss the function of a solar collector
with a diagram.
13. (a) How can we get energy from natural resources like wind?
(or)
(b) explain the working of any 1 kind of wind mill.
14. (a) discuss Ocean tides.
(or)
(b) What is geo-thermal energy? discuss.
15. (a) What is bio-mass fuel? Explain,
(or)
(b) How does industrial waste affect our environment?
part - C (5 x 12 = 60 Marks)
ans ALL the ques. choosing either (a) or (b)
16. (a) What is commercial energy? How is it various from non-commercial energy? discuss.
(or)
(b) explain in brief about availability and consumption trend of energy in India.
17. (a) define the essential subsystem of a solar energy plant.
(or)
(b) discuss the working principle of solar cell in detail.
18. (a) List out the merits and demerits of a wind energy conversion techniques.
(or)

(b) discuss how a wind farm is planned. elaborate the factors to be considered?
19. (a) Write short notes on:
(i) Energy and power from the waves (ii) Prospects of geo-thermal energy in India.
(or)
(b) discuss with an aid of a diagram, how geo-thermal power plant functions.
20. (a) discuss the 2 biomass conversion techniques in detail.
(or)
(b) explain the different issues related to bio-gas plants.

Earning:   Approval pending.