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Engineering :: Energy Conversion


1.  Solar cells are made of
A. Silica B. Steel
C. Sulphur D. Antimony
E. Phosphorous    

2.  The disadvantage of using solar evergy for power production is
A. Requirements of large area for harnessing solar energy B. Energy available during day time only
C. Energy not available during cloudy weather D. Initial cost is high
E. All of the above    

3.  The device used to generate power utilising energy of wind is called
A. Air motor B. Aerogenerator
C. Windmill D. Wind generagor
E. None of the above    

4.  Which of the following power plant will give least running cost of the production of electrical power?
A. Steam power plant B. Diesel engine power plant
C. Gas turbine power plant D. Nuclear power plant
E. All will have nearly same running cost    

5.  Which of the following power plant has the highest cost per kW installed?
A. Steam power plant B. Diesel engine power plant
C. Gas turbine power plant D. Hydro-electric power
E. Nuclear power plant    

6.  Watt second is the unit of
A. Force B. Momentum
C. Power D. Energy
E. None of the above    

7.  1 kilowatt hour is the same as
A. 1 joule B. 1000 joules
C. 1000 watt-sec D. 3600 watt-hours
E. 3600,000 watt-sec    

8.  One BTU is the amount of energy required to raise the temperature of
A. One gram of water through 1?C B. One gram of water through 1?F
C. One kilogram of water through ?F D. One pound of water through 1?C
E. One pound of water through 1?F    

9.  One calorie is the same as
A. 1 dyne B. 1 dyne-sec
C. 1 watt D. 4.18 joules
E. 4.11 watts    

10.  One British thermal unit (BTU) is nearly equal to
A. 243 joules B. 252 joules
C. 504 joules D. 1053 joules
E. 2106 joules    




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