In heat transfer, conductance equals conductivity (kcal/hr/sqm/°C/cm) divided by ________________?

Question: Increasing the liquor level in the evaporator results in the
[A].

decreased capacity.

[B].

increase in liquor film co-efficient.

[C].

decreased effect of hydrostatic head.

[D].

increased true temperature drop.

Answer: Option A

Explanation:

No answer description available for this question.

Question: In thermal radiation for a black body (where, ε is emissivity and α is absorptivity)
[A].

α = 1; ε ≠ 1

[B].

α ≠ 1, ε = 1

[C].

α ≠ 1, ε ≠ 1

[D].

α = 1; ε = 1

Answer: Option D

Explanation:

No answer description available for this question.

Question: Economy of a multiple effect evaporator depends upon the
[A].

heat balance consideration

[B].

rate of heat transfer

[C].

both (a) and (b)

[D].

neither (a) nor (b)

Answer: Option A

Explanation:

No answer description available for this question.

Question: ‘Duhring’s plot’ is of use in
[A].

extractive distillation

[B].

evaporation

[C].

leaching

[D].

absorption

Answer: Option B

Explanation:

No answer description available for this question.

Question: In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred
[A].

through a metallic wall.

[B].

by direct contact of hot flue gas with air.

[C].

by heating an intermediate material (like chequor bricks) and then heating the air from this hot material.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.