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10 of 25 questions on this paper were also asked in other years. Each is marked below with the years it appeared.See all 19 repeated 3151909 questions, most asked first
Define steady-state heat conduction. How does it differ from transient heat conduction?
Also asked in Summer 2023 Q3b
Explain Fourier's law of heat conduction. How does the temperature dependency of thermal conductivity vary for gases compared to solids?
With usual notations derive general heat conduction equation in Cartesian coordinates and explain its significance.
Also asked in Summer 2026 Q1c, Winter 2024 Q2c, Winter 2024 Q3b OR
Derive the formula for the critical radius of insulation for a spherical object. Why does the rate of heat transfer initially decrease with insulation and then increase?
Also asked in Summer 2026 Q3b OR, Winter 2024 Q3a
Also asked in Summer 2026 Q5b, Winter 2024 Q4c OR, Summer 2023 Q4b OR
What are compact heat exchangers, Discuss the design and construction features of compact heat exchangers.
With usual notations derive the expression for effectiveness for a parallel flow heat exchanger.
Define the Biot number and explain its significance in determining the applicability of the lumped capacitance method.
Also asked in Summer 2026 Q3a, Winter 2024 Q4b
What are fins, and why are they used in heat transfer applications? What are the advantages and limitations of using fins for heat transfer enhancement?
Also asked in Summer 2026 Q3b
Derive the expression for temperature distribution and heat transfer rate for a fin insulated at the tip.
Derive the governing equation for one-dimensional transient heat conduction in a plane wall with finite conduction and convective resistances.
What is a thermometer well, and why are errors introduced during temperature measurements?
With usual notations derive the generalized heat conduction equation in spherical coordinates and explain its specific applications.
Also asked in Summer 2026 Q4b, Winter 2024 Q4c
What is the Von-Karman integral momentum equation, Explain the physical significance of the terms in the Von-Karman equation.
Define the following dimensionless numbers and explain their physical significance: Reynolds number (Re), Nusselt number (Nu), Prandtl number (Pr), Grashof number (Gr), Peclet number (Pe), Biot number (Bi)
Explain the physical significance of the momentum equation in fluid flow.
Outline the assumptions made in deriving the Blasius solution for a laminar boundary layer and describe the steps involved in solving the Blasius equation for boundary layer thickness.
Define the following terms : Reflectivity, transmissivity, Emissivity, Kirchhoff’s law, Planck’s law, Wien’s law, Stefan- Boltzmann law.
What is a shape factor, and why is it important in radiation heat exchange?
Also asked in Summer 2026 Q4a OR, Winter 2024 Q3a OR
Explain the significance of the overall heat transfer coefficient in heat exchanger analysis.
Derive the expression for radiation heat exchange between two black bodies.
Distinguish between the hydrodynamic and thermal boundary layers..
Also asked in Summer 2026 Q2a, Summer 2023 Q3c OR
What is the fouling factor, and how does it affect the performance of a heat exchanger?
Also asked in Summer 2023 Q5a
Define the overall heat transfer coefficient and derive its expression for a heat exchanger. How does the overall heat transfer coefficient vary for single-phase and two-phase heat transfer?
Questions repeat across sessions. Working through two or three papers shows you which topics GTU asks most.
BE Mechanical
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Official Gujarat Technological University (GTU) examination paper for Heat Transfer (Summer 2025, B.E. · Mechanical Engineering, Sem 5). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.
3151909 Heat Transfer
Official GTU PDF · Summer 2025
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