a) Conduction b) Convection c) Radiation d) Both radiation and convection Answer: a Explanation: Conduction is the ...
View QuestionAccording to_________ law, the conductive heat flux is linearly proportional to the temperature gradient.
a) Fourier’s law b) Pascal law c) Newton law d) Stefan-Boltzmann Law Answer: a Explanation: According to ...
View QuestionIs thermal diffusivity and thermal conductivity related?
a) True b) False Answer: a Explanation: The thermal diffusivity is the thermal conductivity divided by density of ...
View QuestionWhat are factors of heat capacity?
a) Heat energy, time b) Heat energy, temperature c) Heat energy, temperature, time d) Temperature, time Answer: ...
View QuestionWhich law governs the thermal conductivity?
a) Fourier’s law b) Pascal law c) Newton law d) Planks law Answer: a Explanation: The ...
View QuestionWhich of the following example does not explain conduction?
a) The heat from a hot liquid makes the cup itself hot b) Walking on the beach on ...
View QuestionAre these statements about the thermal conductivity true? Statement 1: Thermal conductivity is an extrinsic property. Statement 2: It involves in the bulk motion of the molecules during heat transfer.
Are these statements about the thermal conductivity true? Statement 1: Thermal conductivity is an extrinsic property. Statement 2: ...
View QuestionWhich of the following is the best insulator?
a) Silica aerogels b) Manganese aerogels c) Potassium aerogels d) Lead aerogels Answer: a Explanation: The ...
View QuestionWhich material has highest thermal conductivity?
a) Diamond b) Copper c) Silver d) Bronze Answer: a Explanation: Diamond has highest thermal conductivity around ...
View QuestionIce has __________ thermal conductivity than water.
a) lower b) higher c) same d) very lower Answer: b Explanation: Ice has higher thermal conductivity ...
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