A. 1
B. < 1
C. > 1
D. Between 0 and 1
A. Plain carbon steel
B. Stainless steel
C. Lead
D. Copper
A. Free convection
B. Entry length problem in laminar forced conduction (develog thermal boundary layer)
C. Mixed convection (both free and forced)
D. Forced convection
A. High temperature
B. High pressure
C. Low film co-efficient
D. None of these
A. There is no internal heat generation
B. Boundary surfaces are isothermal
C. Material is anisotropic
D. Constant temperature gradient exists
A. D/5 and D
B. D/2 and 2 D
C. D/4 and 2 D
D. D and 2 D
A. Sum
B. Difference
C. Ratio
D. None of these