- (A) Free convection
- (B) Entry length problem in laminar forced conduction (developing thermal boundary layer)
- (C) Mixed convection (both free and forced)
- (D) Forced convection
Chemical Engineering Mcqs
- (A) J.m-2.K-1
- (B) J.m-1.K-1
- (C) W.m-2.K-1
- (D) W-1m2K
- (A) Increased
- (B) Decreased
- (C) No effect on
- (D) None of these
- (A) Temperature of the heating surface is less than the boiling point of the liquid
- (B) Temperature of the heating surface is more than the boiling point of the liquid
- (C) Bubbles from heating surface are absorbed by the mass of the liquid
- (D) Very large vapour space is necessary
- (A) Between two bodies in physical contact with each other
- (B) Between two bodies not in physical contact with each other
- (C) From one part of a body to the another part of the same body
- (D) Both B & C
- (A) Condensation rate
- (B) Surface configuration
- (C) Liquid flow rate from the surface
- (D) All
- (A) εx + εy
- (B) εx . εy
- (C) 1/εx + 1/εy
- (D) (εx + εy)/( εx + εy – εx . εy)
- (A) Increases
- (B) Decreases
- (C) Remain same
- (D) May increase or decrease depending on the type of gas
- (A) Logarithmic mean area
- (B) Arithmetic mean area
- (C) Geometric mean area
- (D) None of these
- (A) Wavelength of radiation
- (B) Surface temperature of the body
- (C) Nature of the surface
- (D) Shape and porosity of the body
