OR 0551 Renewable Energy Sources Mcq

COMMON TO CIVIL & MECHANICAL ENGINEERING DEPARTMENT

OR 0551 Renewable Energy Sources 

Multiple choice question(Mcq)

1.Which of the following is renewable resources

a) wind b) tides c) geothermal heat d) all  of the above 

2.Which of the following country generate all their electricity using renewable energy?

a) Iceland b) England c) usa d) china 

3.Renewable energy often displaces conventional fuel in which of the following area

a) space heating b) transportation c) electricity generation d) all of the above 

4.The International Renewable Energy Agency (IRENA) was formed in

a) 2008 b) 2009 c) 2010 d) 2011

5.Which of the following is Non renewable resources

a) wind b) coal c) wave d) all of the above 

6.Which of the following is Primary Resources

a) oil b) biomass c) natural gas d) all of the above 

7.Which of the following is Conventional Energy Resources

a) fossil fuel b) hydraulic energy c) nuclear energy d) all of the above 

8.Environmental Impact of solar energy

a) land use and habitat loss b) water use c) both a and b d) none 

9.Instrument for the measurement of direct radiation flux

a) pyrheliometer b) pyranometer c) sunshine decoder d) all of the above 

10.Instrument for the measurement of direct and diffuse radiation

a) pyrheliometer b) pyranometer c) sunshine decoder d) all

11.The duration of bright sunshine in a day is measured by

a) pyrheliometer b) pyranometer c) sunshine decoder d) all

12.TMY means

a) typical meterological year b) typical monological year c) typical measurement year d) none

13.A liquid flat plate collector is usually held tilted in a fixed position, facing _____ if located in the northern hemisphere.           

a) west b) north c) south d) east

14.The collection efficiency of Flat plate collector can be improved by

a) putting a selective coating on plate b) evacuating the space above the absorber plate  c) both a and b d) none

15.The efficiency of various types of collectors ______ with _______ temperature

a) increaes,decreases b) decreasing,increasing c) remains same, increasing d) constant,constant

16.Maximum efficiency is obtained in 

a) flat plate collector b) evacuated tube collector c) line focussing collector d) paraboloid dish collector 

17.Which of the following type of collector is used for low temperature systems?

a) flat plate collector b) line focussing c) paraboloid dish collector d) all of the above

18.The hour angle is equivalent to

a) 10* per hr b) 15* per hr c) 20* per hr d) 25* per hr 

19.The ratio of the beam radiation flux falling on a tilted surface to that falling on a horizontal surface is called the

a) radiation shape factor b) tilt factor c) slope d) none 

20.The global radiation reaching a horizontal surface on the earth is given by

a) hourly beam radiation +hourly dissufe radiation b) hourly beam radiation - hourly diffuse radiation c) hourly beam raditaion/hourly diffuse radiation d) hourly diffuse radiation/hourly beam radiation 

21.Beam radiations are measured with

a) anemometer b) pyrheliometer c) sunshine recorder d) all 

22.Surface azimuth angle varies from

a) 0 to 90* b) -90 to 90 c) 0 to 180* d) -180 to 180 

23.The value of Solar Constant is

a) 1347 w/m2 b) 1357 w/m2 c) 1367 w/m2  d) 1377 w/m2

24.The complement of zenith angle is

a) solar attitude angle b) surface azimuth angle c) solar azimuth angle d) slope 

25.Types of solar energy storage methods 

a) thermal b) sorption c) chemical d) all of the above

26.Methods of Thermal energy storage systems

a) SHS b) LHS c) stratified storage d) all the above 

27.Raising the Temperature of solid or liquid by using its heat capacity is known as

a) LHS b) SHS c) stratified storage d) all the above 

28.Change in Phase of Solid or Liquid is known as

a) LHS b) SHS c) stratified storage d) all 

29.Advantage of Stratified heat storage

a) energy efficiency b) optimum process c) reliable material d) all 

30.Different zones of solar pond 

a) fresh water b) gradient zone c) salt saturated d) all 

31.Applications of solar pond 

a) Desalination b) salt water c) salt saturated d) all 

32.Components of PV system 

a) solar cell array b) load leveler c) storage system d) all 

33.Solar heating techniques are 

a) solar water heater b) solar cooker c) solar space heating d) all 

34.Solar cooling techniques are 

a) vapour absorption b) vapour adsorption c) steam absorption d) steam adsorption

35.Different types of Homo junction PV cells

a) amorphous silicon b) poly crystalline silicon c) single crystal silicon d) all 

36.The process of converting poly crystalline to the single crystal silicon is called

a) crystal growing b) crystal structure c) crystal polymers d) none 

37.Following country met more than 40% of its electricity demand from wind energy

a) Denmark b) Portugal c) Ireland d) spain

38.In which of the following region winds are stronger and constant

a) deserts b) offshore c) low altitude sites  d) all

39.Bio-diesel is produced from oils or fats using

a) fermentation b) transesterification c) distillation d) none

40.Biomass can be converted to

a) methane gas b) ethanol c) bio diesel d) all

41.Which type of windmill has better performance?

a) verticle type windmills b) darrieus type machine c) magnus effect d) horizontal type windmills 

42.At what type of location vibrations are more in the wind turbine?

a) downwind location b) upwind location c) windward d)  leeward 

43.What does WECS stands for?

a) wind energy conversion system b) wind engine control system c) wind energy combined system d) wind engine comparison system 

44.What are used to turn wind energy into electrical energy?

a) turbine b) generators c) yaw motor d) blades 

45.This is called a bio gas ? 

a) bio butanol b) bio diesel c) bieethanol d) biomethane

46.Production of bio ethanol is through fermentation of ________ and starch components

a) alchohol b) sugar c) milk d) acid 

47.In bio methane, the percentage of carbon dioxide is

a) 55-60 b) 35-45 c) 30-40 d) 32-43

48.The aerobic digestion of sewage is utilized in the production of

a) metal articles b) biofuels c) biomass d) synthetic fuels

49.The difference, in temperature between the core of the planet and its surface, is known as

a) geothermal coefficient b) geothermal gradient c) geothermal constant d) none 

50.Tidal energy utilizes

a) kinetic energy of water b) potential energy of water c) both a and b d) none

51.List some geothermal fluids 

a) hot water b) hot brine c) both a and b d) none

52.Classify Geothermal electric power plants

a) according to geothermal energy sources b) according to thermodynamic cycle c) both a and b

d) none 

53.In geothermal power plants waste water is

a) discharged back to earth b) discharged into the sea c) recirculated after cooling in cooling towers d) evaporated in ponds 

54.Types of OTEC cycles 

a) open cycle b) closed cycle c) both a and b d) none

55.If the tides range is maximum, It is called

a) spring tides b) low tides c) both a and b d) none 

56.Types of turbines used in tidal power stations

a) bulb  turbine b) rim turbine c) tubular turbine d) all 

57.OTEC stands for 

a) oil and thermal energy conversion b) ocean thermal energy convention c) ocean thermal energy conversion d) oil and thermal energy convention 

58.DEC Systems follow which of the following effects

a) seebeck effect b) peltier effect c) joule effect d) all 

59.A device uses hydrogen and oxygen to create an electric current is known as

a) fuel cell b) biomass c) both a and b d) none 

60.What are the working fluids in closed cycle OTEC

a) ammonia b) freon c) butane d) all the above