Renewable Sources of Energy Mcqs
This set of Engineering Multiple Choice Questions & Answers (MCQs) focuses on “ Renewable Sources of Energy ”. These Mcqs are chosen from a collection of most authoritative and best reference books on Chemical Engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Renewable Sources of Energy comprehensively.
92. Which of the following statements about using water as a heat-exchange fluid in flat-plate collectors is not true?
It is convenient to obtain and handle
It has a large heat capacity
A large amount of electric power is required to run the water pump
Freeze protection can be obtained by mixing with ethylene glycol
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93. A pure substance at its triple point
Exists in gas liquid and solid phases simultaneously
Changes directly from solid to vapour
Loses phase distinction between liquid and vapour
Behaves as an ideal gas
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94. When moist air is cooled by sensible heat removal which of the following is incorrect?
Neither relative humidity nor specific humidity changes
Specific humidity changes but not relative humidity
Both relative humidity and specific humidity change
None of the above
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95. Solar pond is a body of saline water in which the salt concentration
Increases from the top surface to the bottom surface
Decreases from the top surface to the bottom surface
Remains the same in the whole pond
None of the above
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96. Solar pond usually consists of an upper convective layer (UCL) a nonconvective layer (NCL) and a lower lower convective layer (LCL). The solar energy is stored in
UCL
NCL
LCL
UCL and LCL
97. In solar ponds the upper convective layer
Has no useful role in energy collection
Is caused by wind action and heat transfer
Is considered a homogeneous low salinity layer
All of the above
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98. In solar ponds the transfer of heat and salt is convective in the where UCL NCL and LCL are upper convective layer nonconvective layer and lower convective layer respectively
UCL and LCL
UCL and NCL
NCL and LCL
UCL NCL and LCL
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99. In solar ponds there is a diffusive transport of heat and salt in the
UCL
NCL
LCL
All of the above
100. The nonconvective layer of solar ponds is an example of
Single diffusive system
Double diffusive system
Triple diffusive system
None of the above
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