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Conduction Process HMT Tutorial- 4, Heat and Mass Transfer, Mechanical Engineering, GATE Video Lecture | Topper Handwritten Notes & Videos for GATE ME

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FAQs on Conduction Process HMT Tutorial- 4, Heat and Mass Transfer, Mechanical Engineering, GATE Video Lecture - Topper Handwritten Notes & Videos for GATE ME

1. What is conduction in heat and mass transfer?
Ans. Conduction is the process of heat or mass transfer through a solid material without any bulk motion of the material itself. It occurs due to the transfer of energy or mass between adjacent molecules or particles through direct contact.
2. How is heat transferred through conduction?
Ans. Heat is transferred through conduction by the collision of adjacent molecules or particles in a solid material. When one molecule gains energy, it transfers some of its energy to the neighboring molecules, causing them to vibrate and gain energy as well. This transfer continues throughout the material until thermal equilibrium is reached.
3. What factors affect the rate of conduction?
Ans. The rate of conduction is influenced by several factors, including the thermal conductivity of the material, the temperature difference across the material, the surface area of contact, and the thickness of the material. Materials with higher thermal conductivity and larger surface area of contact tend to have higher conduction rates.
4. How is conduction different from convection and radiation?
Ans. Conduction, convection, and radiation are three different modes of heat transfer. Conduction involves the transfer of heat or mass through direct contact between molecules or particles in a solid. Convection, on the other hand, occurs in fluids (liquids or gases) and involves the transfer of heat or mass through the movement of the fluid itself. Radiation is the transfer of heat through electromagnetic waves and does not require a medium for transfer.
5. What are some practical applications of conduction?
Ans. Conduction plays a crucial role in various practical applications, such as cooking on a stove, heating systems, refrigeration, thermal insulation, and electronic devices. It is essential in designing efficient heat exchangers and ensuring proper insulation to prevent heat loss or gain in buildings and industrial processes.
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