Heat and Mass Transfer The critical thickness of insulation for a sphere is h₀/2k h₀/k 2k/h₀ k/h₀ h₀/2k h₀/k 2k/h₀ k/h₀ ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The time constant of a thermocouple is Determined by the time taken to reach 100°C from 0°C The time taken to attain 63.2% of the value of initial temperature difference The time taken to attain the final temperature to be measured The time taken to attain 50% of the value of initial temperature difference Determined by the time taken to reach 100°C from 0°C The time taken to attain 63.2% of the value of initial temperature difference The time taken to attain the final temperature to be measured The time taken to attain 50% of the value of initial temperature difference ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The radiation emitted by a black body is known as All of these Total radiation Black radiation Full radiation All of these Total radiation Black radiation Full radiation ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The total radiation from a black body per second per unit area is ________ fourth power of the absolute temperature. This statement is known as Stefan Boltzmann law. None of these Equal to Inversely proportional to Directly proportional to None of these Equal to Inversely proportional to Directly proportional to ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Joule sec is the unit of Thermal conductivity Planck's constant Universal gas constant Kinematic viscosity Thermal conductivity Planck's constant Universal gas constant Kinematic viscosity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat transfer takes place as per Kirchoff's law Zeroth law of thermodynamics Second law of the thermodynamics First law of thermodynamic Kirchoff's law Zeroth law of thermodynamics Second law of the thermodynamics First law of thermodynamic ANSWER DOWNLOAD EXAMIANS APP
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