Heat Transfer MCQ

Q1. What is heat transfer?

Q2. Which of the following is NOT a method of heat transfer?

Q3. Heat transfer through solids occurs mainly by:

Q4. The rate of heat transfer through conduction is given by:

Q5. The unit of thermal conductivity is:

Q6. Convective heat transfer is produced by:

Q7. The heat transfer coefficient in convection depends on:

Q8. Which law models the heat radiation from a blackbody?

Q9. The emissivity of a surface is defined as:

Q10. Heat transfer by radiation requires:

Q11. In a composite wall, the overall thermal resistance is:

Q12. In heat exchanger design, fouling factor accounts for:

Q13. The Nusselt number is a dimensionless number representing:

Q14. In forced convection, heat transfer is enhanced by:

Q15. The critical radius of insulation is:

Q16. The Biot number is used to assess:

Q17. The overall heat transfer coefficient combines:

Q18. The Prandtl number relates:

Q19. Radiation heat transfer between two surfaces depends on:

Q20. In laminar flow over a flat plate, the thermal boundary layer is:

Q21. In conduction, the temperature distribution in steady state through a plane wall is:

Q22. The effectiveness of a heat exchanger is defined as:

Q23. In boiling heat transfer, the surface is:

Q24. The Rayleigh number relates to:

Q25. Thermal diffusivity is:

Q26. The Stefan-Boltzmann constant value is approximately:

Q27. Fins are used to:

Q28. The convective heat transfer coefficient, h, increases with:

Q29. The parallel flow heat exchanger has:

Q30. In a counterflow heat exchanger, the temperature profile is:

Q31. In boiling, the nucleate boiling region is characterized by:

Q32. The critical heat flux in boiling is:

Q33. The heat exchanger used for condensing steam is called:

Q34. In steady state conduction, heat transfer through cylindrical wall is given by:

Q35. LMTD stands for:

Q36. The overall heat transfer coefficient is affected by:

Q37. The main mode of heat transfer in a vacuum flask is:

Q38. Thermal conductivity of gases generally:

Q39. The effectiveness-NTU method is used for: