Heat transfer is defined as:
A{'text': 'Energy stored in a body', 'label': 'A'}
B{'text': 'Energy IN TRANSIT due to a TEMPERATURE DIFFERENCE', 'label': 'B'}
C{'text': 'Work done by a force', 'label': 'C'}
D{'text': 'Internal energy change', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'Energy IN TRANSIT due to a TEMPERATURE DIFFERENCE', 'label': 'B'}
Heat transfer = energy transit driven by temperature gradient. Thermodynamics tells WHAT happens (δQ, δW, final state); heat transfer tells HOW (mechanism) and AT WHAT RATE.
Related questions
Why does CONVECTION have HIGHER heat transfer rates than pure conduction for the same tempAn ideal blackbody (emissivity ε = 1) at T = 1000 K emits how much (compared to a real surThe Biot number Bi = hL/k_s appears in transient conduction. Bi ≪ 0.1 means:Thermal diffusivity α is defined as:The full 3-D unsteady heat-diffusion equation (with internal heat generation $\dot{q}$) isFor 2-D, steady-state, no-generation conduction, the governing PDE is:If a CFD code can compute heat conduction but is missing CONVECTION terms, what equation iNet radiation between a small surface at T_s and a much larger surrounding at T_sur is app