Heat Transfer 1 BTU/hr.ft.°F is equal to __________ kcal/hr. m.°C. 1.49 4.88 1 None of these 1.49 4.88 1 None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the lowest Prandtl number? Water Dilute H₂SO₄ Transformer oil Molten sodium (a coolant used in fast breeder reactor) Water Dilute H₂SO₄ Transformer oil Molten sodium (a coolant used in fast breeder reactor) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change in temperature is the smallest for Sphere Cube Cylinder Equal for all the three Sphere Cube Cylinder Equal for all the three ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number for full developed, laminar, constant property flow in a pipe at uniform heat flux is 83 18 4.364 0.72 83 18 4.364 0.72 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body) α T⁴ αT α 1/T Independent of T α T⁴ αT α 1/T Independent of T ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Grashoff number, which is defined as g . β(Ts - T∞) ρ². L³/μ², is proportional to the ratio of buoyancy force to __________ force. Viscous Elastic None of these Inertial Viscous Elastic None of these Inertial ANSWER DOWNLOAD EXAMIANS APP
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