Heat Transfer MCQ Questions & Answers | Chemical Engineering

A. Brinkman number

B. Stanton number

C. Schmidt number

D. Peclet number

A. 15 min

B. 22 min

C. 44 min

D. 51 min

A. Cube

B. Plate

C. Sphere

D. All of the above

A. Nu = (Re) (Pr) (Gz)

B. Nu = (Re) (Pr) (St)

C. Nu = (Re)(Pr)

D. Nu = (Pr)(St)

A. U₁ - U₂

B. $$\frac{1}{{{{\text{U}}_1}}} - \frac{1}{{{{\text{U}}_2}}}$$

C. $$\frac{1}{{{{\text{U}}_2}}} - \frac{1}{{{{\text{U}}_1}}}$$

D. U₂ - U₁

A. Higher economy

B. Lower capacity

C. Both A & B

D. Lower economy

A. In case of heat transfer by purely forced convection, G_R/R_e² $$ \leqslant $$ 1

B. The equivalent diameter of heat transfer for a duct of square cross-section (having each side as 'x') is equal to 4x

C. Distillation process is not the same as evaporation

D. The effectiveness of nucleate boiling depends basically on the ease with which the bubbles are formed and detached from the heating surface

A. The heat transfer rate is low in view of the large temperature drop

B. It is difficult to maintain

C. It is not economic

D. None of these

A. Grashhoff number

B. Peclet number

C. Reynolds number

D. Prandtl number

A. 1 and 0

B. 0 and 1

C. 1 and $$\infty $$

D. 0 and 0.5