Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem Old 141904 Non Conventional Energy Sources Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV (OLD) EXAMINATION ? WINTER 2018
Subject Code:141904 Date: 12/12/2018
Subject Name: Non - Conventional Energy Sources
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) What is meant by renewable energy sources? Explain in brief these energy
resources with special reference to Indian context.
07
(b) Define following terms with neat sketches: beam radiation, air mass, solar tilt
angle, day length, declination angle.
07
Q.2 (a) Describe with neat sketch the construction and working of solar pond. 07
(b) Calculate the local solar time and declination at a location latitude 23
o
15?N,
Longitude 77
o
30?E at 12:30 IST on June 19, 2010. Equation of time correction is
given from standard table or chart is 1 ?01?.
07
OR
(b) Which instruments are used for solar radiation measurements? Explain
construction and working of Pyranometer.
07
Q.3 (a) Prove that for a horizontal axis propeller type wind mill.
Pmax= 0.595 Ptotal
07
(b) Explain construction and working of horizontal axis wind turbine with neat
sketch.
07
OR
Q.3 (a) Describe the main Considerations in selecting site for wind energy conversion
system.
07
(b) Atmospheric air having the wind velocity of 20 m/s has the density of 1.22 kg/m3
at high altitude where the wind mill is installed. The rotor diameter is 20 m and
it runs at 60 rpm. The actual efficiency of wind mill is 35%. Find the actual power
produced, the maximum torque and axial thrust on turbine shaft.
07
Q.4 (a) Describe a Binary cycle system for liquid dominated system. 07
(b) Describe the closed cycle OTEC power plant and state its advantages over open
cycle system.
07
OR
Q.4 (a) Explain the constructional detail and working of KVIC digester. 07
(b) Discuss the factors which affect the bio gas production in detail. 07
Q.5 (a) Describe an MHD open cycle system. What are the main advantages of an MHD
power generation?
07
(b) Define the term ?energy management? write note on energy audit classify the
energy audit and discuss them in brief.
07
OR
Q.5 (a) Write short note on: Tidal power plant with double basin system. 07
(b) How are fuel cells classified? Explain any one with neat sketch. 07
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This post was last modified on 20 February 2020