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Heat Transfer MCQ Questions & Answers | Chemical Engineering

Learn Heat Transfer MCQ questions & answers are available for a Chemical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Heat Transfer MCQ question is the important chapter for a Chemical Engineering and GATE students. Page-9 section-5

Each section contains 100 MCQs on Heat Transfer .
81
With increase in temperature, the total emissivity of conductors
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Answer: Option A
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82
For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are
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Answer: Option B
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83
Dietus-Boelter equation used for the determination of heat transfer co-efficient is valid
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Answer: Option B
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84
The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid
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Answer: Option B
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85
The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K0 + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be
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Answer: Option C
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86
The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8.
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Answer: Option B
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87
Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second.
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Answer: Option B
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88
Which of the following is generally considered as opaque surface towards radiations?
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Answer: Option D
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89
The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are
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Answer: Option D
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90
Heat transfer by __________ may not necessarily require the presence of a medium.
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Answer: Option D
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