Heat and Mass Transfer Cork is a good insulator because it has Porous body Free electrons Low density Atoms colliding frequency Porous body Free electrons Low density Atoms colliding frequency ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Pick up the wrong case. Heat flowing from one side to other depends directly on Time Face area Thickness Temperature difference Time Face area Thickness Temperature difference ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of solid metals with rise in temperature normally Increases Remain constant Decreases May increase or decrease depending on temperature Increases Remain constant Decreases May increase or decrease depending on temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat transfer by conduction through a thick sphere is given by Q = 2πkr1 r2 (T1 - T2)/ (r2 - r1) Q = 4πkr1 r2 (T1 - T2)/ (r2 - r1) Q = 8πkr1 r2 (T1 - T2)/ (r2 - r1) Q = 6πkr1 r2 (T1 - T2)/ (r2 - r1) Q = 2πkr1 r2 (T1 - T2)/ (r2 - r1) Q = 4πkr1 r2 (T1 - T2)/ (r2 - r1) Q = 8πkr1 r2 (T1 - T2)/ (r2 - r1) Q = 6πkr1 r2 (T1 - T2)/ (r2 - r1) ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The value of the wave length for maximum emissive power is given by Wine’s law Kirchhoff’s law Stefan’s law Planck’s law Wine’s law Kirchhoff’s law Stefan’s law Planck’s law ANSWER DOWNLOAD EXAMIANS APP
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