This set of Heat Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Free Convection Boiling”. 1. When evaporation takes place at the liquid-vapor interface, the heat transfer is solely due to free convection and the film coefficient follows the relation a) Nu = f 1 (G r) f 2 (P r) b) Nu = … Read more
This set of Heat Transfer Problems focuses on “Nucleate Boiling”. 1. Reynolds number is replaced by a modulus significant of the agitation of the fluid particles in nucleate boiling. Such a dimensionless modulus is defined by the relation a) Re b = 2 D b G b/δ f b) Re b = D b G … Read more
This set of Heat Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Bubble Growth”. 1. The bubble diameter at the time of detachment from the surface can be worked out from the relation proposed by a) Stanton b) Fritz c) Fourier d) Nusselt 2. The nucleate pool boiling is influenced by the following factors … Read more
This set of Heat Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Boiling”. 1. Boiling refers to a change from the a) Solid to a liquid phase b) Vapor to a liquid phase c) Liquid to a solid phase d) Liquid to a vapor phase 2. The boiling process has wide-spread applications in (i) … Read more
This set of Heat Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Turbulent Flow”. 1. Which of the following is true for turbulent flow? a) G r P r > 108 b) G r P r > 109 c) G r P r > 103 d) G r P r > 1015 2. Mc … Read more
This set of Heat Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Laminar Flow”. 1. The Nusselt number is related to Reynolds number in laminar and turbulent flows respectively as a) R e-1/2 and R e0.8 b) R e1/2 and R e0.8 c) R e-1/2 and R e-0.8 d) R e1/2 and R e-0.8 … Read more
This set of Heat Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Correlations For Forced Convection”. 1. The convective heat transfer coefficient in laminar flow over a flat plate a) Increases with distance b) Increases if a higher viscosity fluid is used c) Increases if a denser fluid is used d) Decreases with increase … Read more
This set of Heat Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Significance Of Dimensionless Groups”. 1. Ratio of inertia force to viscous force is known as a) Grashof number b) Reynolds number c) Peclet number d) Stanton number 2. The ratio of heat flow rate by convection to flow rate by conduction is … Read more
This set of Heat Transfer aptitude tests focuses on “Dimensional Analysis – Advantages And Limitations”. 1. Ratio of actual velocity to sonic velocity is known as a) Mach number b) Peclet number c) Reynolds number d) Grashof number 2. The value of Prandtl number for air is about a) 0.1 b) 0.4 c) 0.7 d) … Read more
This set of Heat Transfer Multiple Choice Questions & Answers (MCQs) focuses on “Model Studies And Similitude”. 1. Which is a full size structure employed in the actual engineering design? a) Proton b) Prototype c) Electron d) Neutron 2. Which term refers to the theory and art of predicting prototype conditions from model observations? a) … Read more
