CHAPTER 1 INTRODUCTION TO THERMAL AND FLUIDS ENGINEERING

What is the primary focus of thermal-fluids systems?

• Studying chemical reactions

• Measuring electrical resistance

• Energy: its use, conversion, or transmission

• Investigating sound waves

Which discipline focuses on energy transformations and the physical properties of substances?

• Fluid mechanics

• Thermodynamics

• Heat transfer

• Quantum mechanics

Which component is NOT part of a car’s water-cooling system?

• Radiator

• Radiator fan

• Air filter

• Water pump

What does fluid mechanics analyze in a thermal-fluids system?

• Heat flow due to temperature differences

• Energy transformations in fluids

• Pressure and flow resistance in fluids

• Chemical composition of gases

In thermodynamics, what type of system does not allow mass to cross the boundary?

• Open system

• Closed system

• Isolated system

• Dynamic system

What is the driving factor for heat transfer?

• Pressure difference

• Density variation

• Temperature difference

• Mass flow rate

Which of the following is an example of natural convection?

• Heating water in a sealed container

• Buoyant air circulation in a heated room

• Heat transfer through a solid metal rod

• Solar radiation heating a surface

What is a key characteristic of radiation heat transfer?

• It occurs only in solids

• It requires a medium for transfer

• It can occur in a vacuum

• It is driven by fluid motion

Which example best illustrates hydrostatics?

• Wind resistance acting on a moving car

• Pressure forces on a dam holding back a reservoir

• Water flowing through a turbine

• Heat dissipation in an engine radiator

In which process do both mass and energy flow across the system boundary?

• Steady process

• Open system process

• Closed system process

• Transient process