A. Grashoff number
B. Nusselt number
C. Weber number
D. Prandtl number
E. Reynold number
A. higher
B. lower
C. same
D. depends upon the shape of body
E. none of the above
A. 1 :1
B. 2: 1
C. 1 : 2
D. 4 : 1
E. 1 : 4
A. thermal resistance
B. thermal coefficient
C. temperature gradient
D. thermal conductivity
E. heat-transfer
A. varies with temperature
B. varies with wavelength of the incident ray
C. is equal to its emissivity
D. does not vary with temperature and. wavelength of the incident ray
E. none of the above
A. emissivity
B. transmissivity
C. reflectivity
D. intensity of radiation
E. absorptivity
A. convection
B. radiation
C. conduction
D. both convection and conduction
E. none of the above
A. m2/hr
B. m2/hr°C
C. kcal/m2 hr
D. kcal/m.hr°C
E. kcal/m2 hr°C
A. Equivalent thickness of film
B. Thermal conductivity Equivalent thickness of film Specific heat x Viscocity
C. Thermal conductivity Molecular diffusivity of momentum Thermal diffusivity
D. Film coefficient x Inside diameter Thermalconductivity
E. none of the above
A. moisture
B. density
C. temperature
D. all of the above
E. none of the above