Heat Transfer Viscosity of gases __________ with increase in temperature. Increase slowly Decrease slowly Increase very rapidly Remain unaffected Increase slowly Decrease slowly Increase very rapidly Remain unaffected ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of heat transfer by conduction in a hollow cylinder, __________ mean area is used to calculate the heat transfer rate. Geometric Arithmetic Logarithmic Either A, B or C Geometric Arithmetic Logarithmic Either A, B or C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Finned tube heat exchangers are used for smaller heat load give larger area per tube use metal fins of low thermal conductivity facilitate very large temperature drop through tube wall are used for smaller heat load give larger area per tube use metal fins of low thermal conductivity facilitate very large temperature drop through tube wall ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe? < 0.5 < 0.1 0.5 > 0.6 < 0.5 < 0.1 0.5 > 0.6 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, the hydrodynamic and thermal boundary layers are identical? 0.5 1 80 1.5 0.5 1 80 1.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat waves Both B and C Travel in straight line Can not pass through vacuum Can be reflected by a mirror Both B and C Travel in straight line Can not pass through vacuum Can be reflected by a mirror ANSWER DOWNLOAD EXAMIANS APP
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