A) Conduction B) Advection C) Radiation D) Convection
A) Entropy B) Convection C) Conduction D) Radiation
A) Convection B) Conduction C) Radiation D) Entropy
A) Pressure difference and time B) Sound intensity and surface area C) Mass and volume D) Temperature difference and material properties
A) Increases heat transfer rate B) Decreases heat transfer rate C) Reverses heat flow direction D) No effect on heat transfer
A) They emit more radiation B) They reflect radiation away C) They repel heat D) They absorb more radiation and convert it into heat
A) Thermal conductivity B) Vapor pressure C) Density D) Specific heat capacity
A) Natural convection B) Radiation C) Conduction D) Forced convection
A) Thermal conductivity B) Specific heat capacity C) Viscosity D) Density
A) By direct contact between two bodies. B) By mechanical means such as fans. C) Through the bulk flow of fluid. D) Through a vacuum or any transparent medium by photons or electromagnetic waves.
A) The letter 'V'. B) The letter 'H'. C) The letter 'P'. D) The letter 'U'.
A) Watt. B) Joule. C) Newton. D) Calorie.
A) A process function (or path function). B) A thermodynamic potential. C) An equilibrium constant. D) A state function.
A) Fourier's law. B) Fick's laws of diffusion. C) Newton's law for fluids. D) Ohm's law.
A) Conduction B) Convection C) Radiation D) Advection
A) Sunlight warming the ground. B) Transport of warm ocean currents. C) Heat transfer through a metal rod. D) Air heated by a radiator.
A) Viscosity B) Voltage C) Velocity (m/s) D) Volume (m3)
A) Metals B) Liquids C) Solids D) Gases
A) Radiation B) Density (kg/m3) C) Refractive index D) Resistance
A) Solid-state operation with no moving parts B) Easier temperature measurement C) Lower cost D) Higher thermal conductivity
A) 32 °C. B) Approximately 37 °C. C) 40 °C. D) 25 °C.
A) View factor. B) Heat flux. C) Emissivity. D) The Stefan–Boltzmann constant.
A) Sublimation B) Ionization C) Solid-to-solid transformation D) Melting
A) Condensation B) Sublimation C) Melting D) Freezing
A) Stefan-Boltzmann constant. B) View factor. C) Emissivity, which is unity for a black body. D) Heat flux.
A) Gold B) Copper C) Iron D) Tin
A) Condensation B) Deposition C) Sublimation D) Recombination/deionization
A) 1701 B) 1601 C) 1901 D) 1801
A) Mason equation B) Newton's law of cooling C) Stefan-Boltzmann law D) Fourier's law
A) At right angles to each other B) Opposite directions C) Same direction D) Randomly
A) Thermal transmittance adjustment. B) Solar radiation management. C) Passive daytime radiative cooling. D) Carbon dioxide removal.
A) Heat engine B) Thermal diode C) Heat exchanger D) Thermocouple
A) BTUs per minute B) Watts per square meter per kelvin (W/(m2K)) C) Calories per hour D) Joules per second
A) Perpendicular flow B) Counter flow C) Cross flow D) Parallel flow
A) Counter flow B) Cross flow C) Diagonal flow D) Parallel flow
A) Gas flow rates. B) Thermal transmittance values. C) Electric energy consumption in intervals. D) Water usage over time.
A) v B) ρ C) ΔT D) c_p
A) A bimetallic strip B) A thermometer inside a large, closed glass tube C) A digital sensor D) An open mercury container
A) 1000 K. B) About 4000 K. C) 500 K. D) 273 K.
A) Shell and tube B) U-tube C) Double pipe D) Extruded finned pipe
A) Spiral fin pipe B) U-tube C) Shell and tube D) Double pipe
A) Prince-elector of Bavaria B) Jan Ingenhousz C) Benjamin Thompson (Count Rumford) D) Charles Theodore
A) 1750 – 1765 B) 1800 – 1812 C) 1775 – 1789 D) 1784 – 1798
A) Gas B) Plasma C) Liquid D) Solid
A) Lead B) Copper C) Gold D) Silver
A) 1775 B) 1786 C) 1790 D) 1785
A) Deposition B) Evaporation C) Sublimation D) Condensation
A) Seebeck effect B) Joule-Thomson effect C) Peltier effect D) Thermal expansion effect |