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Heat Transfer
  • 1. Which method of heat transfer does not require a physical medium?
A) Convection
B) Radiation
C) Advection
D) Conduction
  • 2. What is the process of heat transfer through direct contact of particles?
A) Conduction
B) Entropy
C) Radiation
D) Convection
  • 3. What is the transfer of heat through the motion of fluid particles?
A) Convection
B) Entropy
C) Radiation
D) Conduction
  • 4. Which heat transfer method occurs in fluids due to density differences?
A) Forced convection
B) Conduction
C) Radiation
D) Natural convection
  • 5. What determines the rate of heat transfer in conduction?
A) Mass and volume
B) Pressure difference and time
C) Sound intensity and surface area
D) Temperature difference and material properties
  • 6. Why are dark-colored objects good absorbers of heat?
A) They reflect radiation away
B) They emit more radiation
C) They repel heat
D) They absorb more radiation and convert it into heat
  • 7. Which material property affects the rate of heat conduction the most?
A) Vapor pressure
B) Specific heat capacity
C) Thermal conductivity
D) Density
  • 8. Which material property describes the amount of heat required to raise the temperature of a substance?
A) Thermal conductivity
B) Specific heat capacity
C) Viscosity
D) Density
  • 9. What effect does increasing surface area have on heat transfer through convection?
A) Decreases heat transfer rate
B) Increases heat transfer rate
C) No effect on heat transfer
D) Reverses heat flow direction
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