Heat Transfer - Section 1
In this section of Heat Transfer, you will find the MCQs related to this field
and can submit your answers easily.
1. | A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m2.°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be |
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Answer: Option B Explanation: No answer description available for this question. Let us discuss. |
2. | A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides |
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Answer: Option A Explanation: No answer description available for this question. Let us discuss. |
3. | Which of the following is concerned with both heat and mass transfer ? |
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Answer: Option A Explanation: No answer description available for this question. Let us discuss. |
4. | Bulk of the convective heat transfer resistance from a hot tube surface to the fluid flowing in it, is |
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Answer: Option C Explanation: No answer description available for this question. Let us discuss. |
5. | The average heat transfer co-efficient for laminar film condensation on vertical surface is inversely proportional to (where, ΔT = Temperature drop across condensate film )
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Answer: Option C Explanation: No answer description available for this question. Let us discuss. |
6. | Pick out the wrong statement. |
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Answer: Option C Explanation: No answer description available for this question. Let us discuss. |
7. | Thermal conductivity of a conducting solid material depends upon its |
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Answer: Option C Explanation: No answer description available for this question. Let us discuss. |
8. | The heat flux (from outside to inside) across an insulating wall with thermal conductivity, K= 0.04 W/m.°K and thickness 0.16m is 10 W/m2. The temperature of the inside wall is - 5°C. The outside wall temperature is |
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Answer: Option C Explanation: No answer description available for this question. Let us discuss. |