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WorksheetsEnergy Storage System 3rd Sem, Sessional-2
Total questions: 30
Worksheet time: 30mins
Which of the following non-metallic materials that can be machined using PCM?
Glass
Ceramics
Some plastics
All of the mentioned
Which of the following industries use PCM for different applications?
Electronic
Automotive
Telecommunication
All of the mentioned
Phase change are usually
endothermic
exothermic
ectothermic
None
The heat energy required to change 0.5 kg of a substance from a solid to a liquid state at the same temperature is called ____
specific heat capacity
specific latent heat of vaporization
sensible heat
specific latent heat of fusion
Consider the following temperature-time graph when a solid is heated. which part of the graph involves latent heat of vaporization?
Part I
Part II
Part III
Part IV
Latent heat is
the heat absorbed or released at a boiling process during a change of phase
the heat absorbed or released at a constant temperature during a change of phase
the heat absorbed or released at a constant temperature during a change of phase of 1 kg object
None
What unit do you use to measure specific heat capacity?
J/Kg ºC
Kg
ºC
J
What unit do you use to measure specific latent heat?
J/Kg ºC
J/Kg
Kg
None
A ______________ transformation, in which a two-component single-phase liquid is cooled and transforms into two solid phases
eutectic
metastable
peritectic
none
Which of the following is a spontaneous endothermic process?
Ice melting
Dissolution of sand in water
Rusting
none
Thermal energy is used in
Industry
Residential sectors
Commercial sectors
All of the above
Which of the following is (are) common thermal mass material(s)
stone
concrete
water
all of the above
Solar process heating systems are designed to provide large quantities of __ for __ buildings.
hot water, residential
space heating, nonresidential
hot water or space heating, nonresidential
none
Following fluid is used in parabolic trough power plant.
molten salt
synthetic oil
pressurized steam
all of the above
Solar energy can be used for
heating
cooling
ventilation
all of the above
Batteries are an example of which type of energy store?
Thermal
Magnetic
Chemical
none
What type of energy transfer is most likely responsible when a plant converts the suns energy into food?
Solar to chemical
Chemical to Solar
Electrical to chemical
None
What form of energy is also described as "energy of motion"?
Potential
Kinetic
Electrical
None
Which of the following is the name for the energy stored in atoms?
Potential
Thermal
Nuclear
None
A hot drink has...
Thermal Energy
Chemical Energy
Heat Energy
None
What are the requirements of energy storage system
Specific energy
Power
Cost and safety
All of the above
What is the heat per unit mass required for a substance to change phases?
latent heat
sensible heat
kinetic energy
None
Main objective of energy storage?
Offset adverse effect of fluctuating demand
Assure steady output from existing plants
Meet peak demand on short notice
All of the above
Following is (are) used as phase change material(s) for storage.
organic materials
inorganic materials
either organic or inorganic materials
none of the above
Which of the following processes take place in solar distillation
evaporation
condensation
both (A) and (B)
none
Solar thermal energy can be useful for drying
crops
wood for construction
food products
all of the above
Solar roof ponds are used for
heating
cooling
both (A) and (B)
none of the above
Hydro power is a …………….
Renewable energy
Non-Renewable energy
Both (a) & (b)
None
Which of the following nonrenewable energy is not classified under a fossil fuel?
Nuclear
Petroleum
Natural gas
None
Photovoltaic cell converts solar energy into...................
electric energy
mechanical energy
chemical energy
none
