WBUT 2013 NON CONVENTIONAL ENERGY SOURCES (EE-802G) Question Paper

CS/B.Tech (ICE)/SEM-8/EE-802G/2013

2013

NON CONVENTIONAL ENERGY SOURCES

Time Allotted : 3 Hours                                   Full Marks : 70

The figures in the margin indicate full marks.

Candidates are required to give their answers in their own words as far as practicable.

GROUP – A

( Multiple Choice Type Questions )

1. Choose the correct alternatives for any ten of the following : 

                                                                        10 x 1 = 10

 i) The energy payback period of a single crystal silicon cell is

                   a) 6 months to 1 year                     b) 1 to 2 years

                   c) 10 to 20 years                            d) 3 to 5 years.

           ii) Extra terrestrial insulation is

                 a) 1000 w/m²                                       b) 1353 w/m²

                  c) 100 w/m²                                           d) 1453 w/m² .

       iii) The efficiency of a commercial solar cell lies in the range

                       a) 0-10 %                   b) 10-20 %

                      c) 20-30 %                   d) 50-60 %.

iv) A two-blade wind turbine produces maximum power

          when the tip-speed ratio is equal to

                   a) π                         b) 2 π

                 c) 3 π                       d) 0.593.

          v) Ocean wave energy can be effectively stored as

               a) Hydrogen energy             b) Electrical energy

               c) Thermal energy                d) Mechanical energy.