Heat Transfer MCQ Questions & Answers

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Each section contains 100 MCQs on Heat Transfer .

The Fourier number (defined as a.t/L²) is used in the analysis of problem involving heat transfer by

A) Forced convection B) Natural convection C) Transient conduction D) Steady state conduction

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Boiling point elevation of a solution of NaOH

A) Increases rapidly with temperature rise B) Is almost independent of temperature C) Is almost independent of pressure D) Both B and C

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always

A) < 1 B) > 1 C) 1 D) ∞

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In counter flow compared to parallel flow,

A) LMTD is greater B) Less surface area is required for a given heat transfer rate C) Both A and B D) More surface area is required for a given heat transfer rate

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Pick out the wrong statement.

A) Heat transfer from a hot body to cold body by the emission of heat waves is called radiation B) Filmwise condensation takes place on non-wettable surfaces C) The boiling point of a solution is affected by liquid head as well as boiling point elevation D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone.

A) Laminar B) Transition C) Both A & B D) Highly turbulent

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe?

A) 0.5 B) < 0.5 C) > 0.6 D) < 0.1

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Rate of heat transfer by vaporisation from pools of water is affected by the

A) Nature of heating surface and distribution of bubbles B) Surface tension of water C) Viscosity of water D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The value of Stefan-Boltazman constant in SI unit is

A) 5.6697 × 10^-8 W/m².°K⁴ B) 0.1714 × 10^-8 W/m².°K⁴ C) 5.6697 × 10^-8 kcal/m².°K⁴ D) 0.1714 × 10^-8 kcal/m².°K⁴

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The Stefan-Boltzman constant depends on the

A) Medium B) Temperature C) Surface D) None of these

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Heat Transfer MCQ Questions & Answers | Chemical Engineering