ESS
Grade-8
Easy
Question
__________are used as absorbers in solar tube collectors.
- Plastic
- Tubes of carbon
- Metallic tubes
- Wooden tubes
Hint:
Since the tubes are used in solar tube collectors it should be able to bear high temperature.
The correct answer is: Metallic tubes
The correct option is c)Metallic tubes.
Vacuum or evacuated tube collectors, also called evacuated tube solar water heaters, consist of a series of parallel rows of transparent glass tubes connected to header tubes through which a heat transfer fluid (usually 50% propylene glycol) is circulated and absorbed heat is generated through the tube.
Related Questions to study
ESS
_________is not a biomass resource.
_________is not a biomass resource.
ESSGrade-8
ESS
Wind is _____________.
Wind is _____________.
ESSGrade-8
ESS
Select the correct statement.
Statement I: Non-conventional energy is free of cost.
Statement II: Non-conventional energy is exhaustible.
Select the correct statement.
Statement I: Non-conventional energy is free of cost.
Statement II: Non-conventional energy is exhaustible.
ESSGrade-8
ESS
The advantage of renewable resources is that_______________.
The advantage of renewable resources is that_______________.
ESSGrade-8
ESS
Solar cooker converts __________.
Solar cooker converts __________.
ESSGrade-8
ESS
Tidal power is____________.
Tidal power is____________.
ESSGrade-8
ESS
Solar cell converts ___________.
Solar cell converts ___________.
ESSGrade-8
ESS
_________is the energy source obtained from organic matter to make electricity.
_________is the energy source obtained from organic matter to make electricity.
ESSGrade-8
ESS
As the population grows, demand for__________.
As the population grows, demand for__________.
ESSGrade-8
ESS
What is a major problem with wind energy?
What is a major problem with wind energy?
ESSGrade-8
ESS
Which of the following cannot be generated once they are exhausted?
Which of the following cannot be generated once they are exhausted?
ESSGrade-8
ESS
__________ is a non-conventional energy.
__________ is a non-conventional energy.
ESSGrade-8
ESS
Photovoltaic cells convert___________.
Photovoltaic cells convert___________.
ESSGrade-8
ESS
Select the odd one out.
Select the odd one out.
ESSGrade-8
ESS
Biomass can be transformed to_____________.
Biomass can be transformed to_____________.
ESSGrade-8
