A. Asymptotic
B. Hyperbolic
C. Parabolic
D. Linear
A. Stefan’s
B. Dalton’s
C. Wien’s
D. Kirchoff’s
A. Viscosity
B. Density
C. Thermal conductivity
D. Corrosive nature
A. Flows through the tube
B. Flows outside the tubes
C. Can flow either inside or outside the tubes
D. Should not be used as it gives very high pressure drop
A. Is a dimensionless quantity
B. Does not provide a safety factor for design
C. Accounts for additional resistances to heat flow
D. None of these
A. Thermal diffusivity/Momentum diffusivity
B. Thermal diffusivity × Momentum
C. Thermal diffusivity × Mass diffusivity
D. Mass diffusivity × Momentum diffusivity
A. Absorptivity = 0
B. Transmissivity = 1
C. Reflectivity = 0
D. All A., B. & C.