Chemical Heat Transfer Mcqs

1.

Evaporator tubes are generally_____________________?

A. Horizontal

B. Vertical

C. Inclined

D. Random

Answer & Solution Discuss in Board

2.

Which of the following is the most widely used heat insulating material for pipelines carrying steam ?

A. Tar dolomite bricks followed by asbestos

B. Fireclay refractory followed by aluminium sheet

C. Cotton followed by aluminium foil

D. 85% magnesia cement and glass wool

Answer & Solution Discuss in Board

3.

If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows _____________ law?

A. Parabolic

B. Hyperbolic

C. Linear

D. Logarithmic

Answer & Solution Discuss in Board

4.

Grashoff number is given by________________?

A. gD3.β.Δtρ2/μ2

B. gD2βΔtρ/μ2

C. gD2βΔtP2μ

D. gD3βΔtP2/μ

Answer & Solution Discuss in Board

5.

In a heat exchanger, the rate of heat transfer from the hot fluid to the cold fluid___________________?

A. Varies directly as the area and the LMTD

B. Directly proportional to LMTD and inversely proportional to the area

C. Varies as square of the area

D. None of these

Answer & Solution Discuss in Board

6.

For what value of Prandtl number, St = f/2 ?

A. 1.5

B. 1

C. > 1

D. < 1

Answer & Solution Discuss in Board

7.

Heat sensitive materials can be concentrated in an evaporator employing_______________?

A. Vacuum

B. High pressure

C. High residence time

D. None of these

Answer & Solution Discuss in Board

8.

LMTD can’t be used as such without a correction factor for the_________________?

A. Multipass heat exchanger

B. Baffled heat exchanger

C. Condensation of mixed vapour in a condenser

D. All A. B. and C.

Answer & Solution Discuss in Board

9.

Conductance is given by (where, x = thickness, A = heat flow area, K = thermal conductivity.)?

A. x/KA

B. KA/x

C. K/Ax

D. A/Kx

Answer & Solution Discuss in Board

10.

Heat flux, as defined in heat flow is analogous to _______________ in electricity flow?

A. Current

B. Voltage

C. Resistance

D. None of these

Answer & Solution Discuss in Board

Practice MCQ Questions and answers on Chemical Heat Transfer Mcqs

1. Evaporator tubes are generally_____________________?

Answer & Solution

2. Which of the following is the most widely used heat insulating material for pipelines carrying steam ?

Answer & Solution

3. If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows _____________ law?

Answer & Solution

4. Grashoff number is given by________________?

Answer & Solution

5. In a heat exchanger, the rate of heat transfer from the hot fluid to the cold fluid___________________?

Answer & Solution

6. For what value of Prandtl number, St = f/2 ?

Answer & Solution

7. Heat sensitive materials can be concentrated in an evaporator employing_______________?

Answer & Solution

8. LMTD can’t be used as such without a correction factor for the_________________?

Answer & Solution

9. Conductance is given by (where, x = thickness, A = heat flow area, K = thermal conductivity.)?

Answer & Solution

10. Heat flux, as defined in heat flow is analogous to _______________ in electricity flow?

Answer & Solution

Read More Section(Chemical Engineering Mcqs)

1.

Evaporator tubes are generally_____________________?

2.

Which of the following is the most widely used heat insulating material for pipelines carrying steam ?

3.

If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows _____________ law?

4.

Grashoff number is given by________________?

5.

In a heat exchanger, the rate of heat transfer from the hot fluid to the cold fluid___________________?

6.

For what value of Prandtl number, St = f/2 ?

7.

Heat sensitive materials can be concentrated in an evaporator employing_______________?

8.

LMTD can’t be used as such without a correction factor for the_________________?

9.

Conductance is given by (where, x = thickness, A = heat flow area, K = thermal conductivity.)?

10.

Heat flux, as defined in heat flow is analogous to _______________ in electricity flow?