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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Heat Transfer  >  Test: Thermal Conductivity of Materials - Mechanical Engineering MCQ

Test: Thermal Conductivity of Materials - Mechanical Engineering MCQ


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10 Questions MCQ Test Heat Transfer - Test: Thermal Conductivity of Materials

Test: Thermal Conductivity of Materials for Mechanical Engineering 2024 is part of Heat Transfer preparation. The Test: Thermal Conductivity of Materials questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Thermal Conductivity of Materials MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Thermal Conductivity of Materials below.
Solutions of Test: Thermal Conductivity of Materials questions in English are available as part of our Heat Transfer for Mechanical Engineering & Test: Thermal Conductivity of Materials solutions in Hindi for Heat Transfer course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Test: Thermal Conductivity of Materials | 10 questions in 20 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study Heat Transfer for Mechanical Engineering Exam | Download free PDF with solutions
Test: Thermal Conductivity of Materials - Question 1
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Thermal conductivity is defined as the heat flow per unit time

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Thermal conductivity of a material is because of migration of free electrons and lattice vibrational waves.

Test: Thermal Conductivity of Materials - Question 2
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Mark the matter with least value of thermal conductivity

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For air it is .024 W/ m degree i.e. lowest.

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Test: Thermal Conductivity of Materials - Question 3
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Which one of the following forms of water have the highest value of thermal conductivity?

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For ice it is 2.25 W/m degree i.e. maximum.

Test: Thermal Conductivity of Materials - Question 4
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The average thermal conductivities of water and air conform to the ratio
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For water it is 0.55-0.7 W/m degree and for air it is .024 W/m degree.

Test: Thermal Conductivity of Materials - Question 5
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Identify the very good insulator
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Glass wool has lowest thermal conductivity of 0.03 W/m degree amongst given option.

Test: Thermal Conductivity of Materials - Question 6
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Most metals are good conductor of heat because of
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For good conductors there must be electrons that are free to move.

Test: Thermal Conductivity of Materials - Question 7
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Heat conduction in gases is due to
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If there is elastic collision then after sometime molecules regain its natural position.

Test: Thermal Conductivity of Materials - Question 8
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The heat energy propagation due to conduction heat transfer will be minimum for
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It is because air has lowest value of thermal conductivity amongst given options.

Test: Thermal Conductivity of Materials - Question 9
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Cork is a good insulator because
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Cork has thermal conductivity in the range of 0.05-0.10 which is very low so it can be porous.

Test: Thermal Conductivity of Materials - Question 10
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Choose the false statement
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Thermal conductivity increase with increase in density of substance.

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