- (A) Geometric mean temperature difference
- (B) Arithmetic mean temperature difference
- (C) Logarithmic mean temperature difference
- (D) The difference of average bulk temperatures of hot and cold fluids
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- (A) Increased economy
- (B) Decreased economy
- (C) Lower capacity
- (D) No effect on economy
- (A) 32
- (B) 37
- (C) 45
- (D) 50
- (A) mCp/kL
- (B) kL/mCp
- (C) mCp/kμ
- (D) kμ/mCp
- (A) Nst α f
- (B) Nst α NRe
- (C) NNu α f
- (D) NRe α f
- (A) 4000
- (B) 9000
- (C) 4600
- (D) 3000
- (A) There is no internal heat generation
- (B) Boundary surfaces are isothermal
- (C) Material is anisotropic
- (D) Constant temperature gradient exists
- (A) Increasing temperature
- (B) Decreasing temperature
- (C) Decreasing Reynolds number
- (D) None of these
- (A) Increase the steam economy & decrease the capacity
- (B) Increase the steam economy & the capacity
- (C) Decrease the steam economy & the capacity
- (D) Decrease the steam economy & increase the capacity
- (A) Graetz number
- (B) Eckert number
- (C) Grashoff number
- (D) Bond number
