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Test: Solar Absorptivity


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10 Questions MCQ Test Heat Transfer | Test: Solar Absorptivity

Test: Solar Absorptivity for Chemical Engineering 2022 is part of Heat Transfer preparation. The Test: Solar Absorptivity questions and answers have been prepared according to the Chemical Engineering exam syllabus.The Test: Solar Absorptivity MCQs are made for Chemical Engineering 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Solar Absorptivity below.
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Test: Solar Absorptivity - Question 1

Which one is having highest value of solar absorptivity?

Detailed Solution for Test: Solar Absorptivity - Question 1

Solar absorptivity for asphalt is 0.90 while that of white marble, concrete and snow are 0.46, 0.60 and 0.28 respectively.

Test: Solar Absorptivity - Question 2

What is the value of solar absorptivity for aluminum foil?

Detailed Solution for Test: Solar Absorptivity - Question 2

Solar absorptivity doesn’t require a medium and for aluminum it reaches maximum efficiency in a vacuum.

Test: Solar Absorptivity - Question 3

What is the value of solar absorptivity for polished copper?

Detailed Solution for Test: Solar Absorptivity - Question 3

Solar absorptivity for polished copper depends on frequency and wavelength of the radiation.

Test: Solar Absorptivity - Question 4

Which one is having lowest value of solar absorptivity?

Detailed Solution for Test: Solar Absorptivity - Question 4

Solar absorptivity for polished aluminum is 0.09 while that of red brick, aluminum foil and snow are 0.63, 0.15 and 0.28 respectively.

Test: Solar Absorptivity - Question 5

What is the value of solar absorptivity for polished stainless steel?

Detailed Solution for Test: Solar Absorptivity - Question 5

There is vibration within the molecules and it can potentially initiate an electromagnetic waves.

Test: Solar Absorptivity - Question 6

Which one is having lowest value of solar absorptivity?

Detailed Solution for Test: Solar Absorptivity - Question 6

Solar absorptivity for white marble is 0.46 while that of black paint, dull stainless steel and concrete are 0.97, 0.50 and 0.60 respectively.

Test: Solar Absorptivity - Question 7

What is the value of solar absorptivity for white marble?

Detailed Solution for Test: Solar Absorptivity - Question 7

It generates and receive electromagnetic waves at the expense of its stored energy.

Test: Solar Absorptivity - Question 8

Which one is having highest value of solar absorptivity?

Detailed Solution for Test: Solar Absorptivity - Question 8

Emissivity of black paint is 0.97 while that of red brick, asphalt and white paint are 0.63, 0.90 and 0.14 respectively.

Test: Solar Absorptivity - Question 9

What is the value of solar absorptivity for asphalt?

Detailed Solution for Test: Solar Absorptivity - Question 9

Energy emitted by asphalt is not continuous but is in the form of quanta.

Test: Solar Absorptivity - Question 10

What is the value of solar absorptivity for snow?

Detailed Solution for Test: Solar Absorptivity - Question 10

Solar absorptivity for snow varies on the nature of its surface and its temperature.

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