What is the correct answer?


Thermal diffusivity is a

A. Function of temperature

B. Physical property of a substance

C. Dimensionless parameter

D. All of these

Correct Answer :

B. Physical property of a substance

Related Questions

Thermal diffusivity is Heat is closely related with The most commonly used method for the design of duct size is the In convection heat transfer from hot flue gases to water tube, even though… In free convection heat transfer, Nusselt number is function of According to Kirchoff's law, the ratio of emissive power to absorptivity… Stefan Boltzmann law is applicable for heat transfer by The amount of radiation mainly depends upon the Joule sec is the unit of Kirchhoff's law states that Upto the critical radius of insulation, The concept of overall coefficient of heat transfer is used in case of… In regenerator type heat exchanger, heat transfer takes place by The value of Prandtl number for air is about Thermal diffusivity is a According to Newton's law of cooling, the heat transfer from a hot body… Two balls of same material and finish have their diameters in the ratio… The heat transfer by conduction through a thick sphere is given by Free convection flow depends on Which of the following is a case of steady state heat transfer? Thermal conductivity of water at 20°C is of the order of Thermal conductivity of a material may be defined as the An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated… In case of liquids and gases, the heat transfer takes place according… Heat transfer takes place as per Film coefficient is defined as the ratio of The use of heat exchangers is made in Temperature of steam at around 540°C can be measured by When heat is transferred from one particle of hot body to another by actual… Thermal conductivity of air at room temperature in kcal/m hr °C is…