Heat Transfer

Q. What is the primary mechanism of heat transfer in liquids and gases?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Insulation
Q. What is the primary mechanism of heat transfer in liquids?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. All of the above
Q. What is the primary method of heat transfer from the Sun to the Earth?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Conduction and Convection
Q. What is the primary mode of heat transfer from the Sun to the Earth?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Conduction and Convection
Q. What is the primary mode of heat transfer in a vacuum?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Insulation
Q. What is the primary mode of heat transfer in liquids and gases?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. None of the above
Q. What is the primary reason for using insulation in buildings?
  • A. To prevent conduction
  • B. To enhance convection
  • C. To increase radiation
  • D. To allow heat flow
Q. What is the SI unit of thermal conductivity?
  • A. W/m·K
  • B. J/kg·K
  • C. K/W
  • D. J/m·s
Q. What is the Stefan-Boltzmann law related to?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Thermal expansion
Q. What is the term for the amount of heat required to raise the temperature of 1 kg of a substance by 1 degree Celsius?
  • A. Heat capacity
  • B. Specific heat capacity
  • C. Latent heat
  • D. Thermal conductivity
Q. What is the term for the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius?
  • A. Heat capacity
  • B. Specific heat
  • C. Latent heat
  • D. Thermal conductivity
Q. What is the term for the heat transfer that occurs due to the movement of a fluid?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Insulation
Q. What is the term for the transfer of heat through electromagnetic waves?
  • A. Conduction
  • B. Convection
  • C. Radiation
  • D. Conduction and Convection
Q. What is the unit of thermal conductivity?
  • A. W/m·K
  • B. J/kg·K
  • C. K/W
  • D. J/m·s
Q. Which law states that the rate of heat transfer through a material is proportional to the temperature gradient?
  • A. Newton's Law of Cooling
  • B. Fourier's Law of Heat Conduction
  • C. Stefan-Boltzmann Law
  • D. Kirchhoff's Law
Q. Which law states that the rate of heat transfer through a material is proportional to the negative gradient of temperature?
  • A. Newton's Law of Cooling
  • B. Fourier's Law of Heat Conduction
  • C. Stefan-Boltzmann Law
  • D. Kirchhoff's Law
Q. Which law states that the rate of heat transfer through a material is proportional to the temperature difference across it?
  • A. Newton's Law of Cooling
  • B. Fourier's Law
  • C. Stefan-Boltzmann Law
  • D. Ohm's Law
Q. Which of the following factors does NOT affect the rate of heat transfer by conduction?
  • A. Temperature difference
  • B. Material thickness
  • C. Surface area
  • D. Color of the material
Q. Which of the following factors does NOT affect the rate of heat transfer by convection?
  • A. Fluid velocity
  • B. Surface area
  • C. Temperature difference
  • D. Material density
Q. Which of the following is an example of conduction?
  • A. Boiling water
  • B. Heating a metal rod
  • C. Sun warming the Earth
  • D. Wind blowing
Q. Which of the following is an example of convection?
  • A. Heating a metal rod in a flame
  • B. Boiling water in a pot
  • C. Sunlight warming the ground
  • D. Ice melting in a drink
Q. Which of the following is an example of forced convection?
  • A. Heat transfer in a pot of boiling water
  • B. Heat transfer from a radiator
  • C. Heat transfer from a hot cup of coffee
  • D. Heat transfer in a still air room
Q. Which of the following is an example of heat transfer by radiation?
  • A. Heating a metal rod in a flame
  • B. Sunlight warming the Earth
  • C. Boiling water in a pot
  • D. Heating air in a room
Q. Which of the following is the best conductor of heat?
  • A. Air
  • B. Water
  • C. Copper
  • D. Wood
Q. Which of the following materials has the highest thermal resistance?
  • A. Copper
  • B. Aluminum
  • C. Glass Wool
  • D. Steel
Q. Which of the following materials is the best conductor of heat?
  • A. Wood
  • B. Air
  • C. Copper
  • D. Glass
Q. Which of the following surfaces is the best emitter of radiation?
  • A. Shiny surface
  • B. Dull black surface
  • C. White surface
  • D. Transparent surface
Q. Which of the following surfaces is the best emitter of thermal radiation?
  • A. Shiny metal
  • B. White paint
  • C. Black paint
  • D. Glass
Showing 31 to 58 of 58 (2 Pages)
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