INTRODUCTION TO THERMODYNAMICS AND HEAT
TRANSFER BY YUNUS A CENGEL CHAPTERS 1 3 2026
2027 COURSE THERMODYNAMICS HEAT TRANSFER
FUNDAMENTALS ENERGY SYSTEMS LAWS
COMPREHENSIVE PRACTICE QUESTIONS VERIFIED
ANSWERS HIGH-YIELD STUDY GUIDE GRADED A+
State postulate - CORRECT ANSWER -The state of a simple
compressible system is completely specified by two independent,
intensive properties.
Simple compressible system - CORRECT ANSWER -If a system
involves no electrical, magnetic, gravitational, motion, and surface
tension effects.
Absolute pressure (P) - CORRECT ANSWER -Actual pressure at a
given position.
Gauge pressure (Pgauge) - CORRECT ANSWER -Difference between
atmospheric and local pressure.
Vacuum pressure - CORRECT ANSWER -pressures below atmospheric
pressure.
Patm = ρ*g*h - CORRECT ANSWER -where h is the height of the fluid
above the free surface manometers (pg. 20).
T = a + bP - CORRECT ANSWER -pg. (23)
T(K) = T(C) + 273.15 - CORRECT ANSWER -Celsius to Kelvin
, T(R) = T(F) + 459.67 - CORRECT ANSWER -Fahrenheit to Rankine
T(R) = 1.8*T(K) - CORRECT ANSWER -Kelvin to Rankine
T(F) = 1.8* T(C) + 32 - CORRECT ANSWER -Celsius to Fahrenheit
Change in temperature is equal to change in temperature for another
scale. -
CORRECT ANSWER -delta T(K) = delta T(C)
delta T(R) = delta T(F) (pg. 25)
Pure substance - CORRECT ANSWER -A substance with a fixed
chemical composition throughout.
Compressed liquid/subcooled liquid - CORRECT ANSWER -A fluid in
the liquid phase that is not about to vaporize
Saturated liquid - CORRECT ANSWER -A phase change process from
liquid to gas is about to occur. The liquid is about to vaporize
Saturated vapor - CORRECT ANSWER -A vapor that is about to phase
change from gas to liquid. The vapor is about to condense.
Saturated liquid-vapor mixture - CORRECT ANSWER -The liquid and
vapor phases exist in equilibrium.
Macroscopic energy - CORRECT ANSWER -A form of energy a system
possesses with respect to an outside reference frame (KE or PE).
Microscopic energy - CORRECT ANSWER -A form of energy related to
molecular structure or the degree of molecular activity. The sum of
microscopic forms of energy is the internal energy, denoted by U.
TRANSFER BY YUNUS A CENGEL CHAPTERS 1 3 2026
2027 COURSE THERMODYNAMICS HEAT TRANSFER
FUNDAMENTALS ENERGY SYSTEMS LAWS
COMPREHENSIVE PRACTICE QUESTIONS VERIFIED
ANSWERS HIGH-YIELD STUDY GUIDE GRADED A+
State postulate - CORRECT ANSWER -The state of a simple
compressible system is completely specified by two independent,
intensive properties.
Simple compressible system - CORRECT ANSWER -If a system
involves no electrical, magnetic, gravitational, motion, and surface
tension effects.
Absolute pressure (P) - CORRECT ANSWER -Actual pressure at a
given position.
Gauge pressure (Pgauge) - CORRECT ANSWER -Difference between
atmospheric and local pressure.
Vacuum pressure - CORRECT ANSWER -pressures below atmospheric
pressure.
Patm = ρ*g*h - CORRECT ANSWER -where h is the height of the fluid
above the free surface manometers (pg. 20).
T = a + bP - CORRECT ANSWER -pg. (23)
T(K) = T(C) + 273.15 - CORRECT ANSWER -Celsius to Kelvin
, T(R) = T(F) + 459.67 - CORRECT ANSWER -Fahrenheit to Rankine
T(R) = 1.8*T(K) - CORRECT ANSWER -Kelvin to Rankine
T(F) = 1.8* T(C) + 32 - CORRECT ANSWER -Celsius to Fahrenheit
Change in temperature is equal to change in temperature for another
scale. -
CORRECT ANSWER -delta T(K) = delta T(C)
delta T(R) = delta T(F) (pg. 25)
Pure substance - CORRECT ANSWER -A substance with a fixed
chemical composition throughout.
Compressed liquid/subcooled liquid - CORRECT ANSWER -A fluid in
the liquid phase that is not about to vaporize
Saturated liquid - CORRECT ANSWER -A phase change process from
liquid to gas is about to occur. The liquid is about to vaporize
Saturated vapor - CORRECT ANSWER -A vapor that is about to phase
change from gas to liquid. The vapor is about to condense.
Saturated liquid-vapor mixture - CORRECT ANSWER -The liquid and
vapor phases exist in equilibrium.
Macroscopic energy - CORRECT ANSWER -A form of energy a system
possesses with respect to an outside reference frame (KE or PE).
Microscopic energy - CORRECT ANSWER -A form of energy related to
molecular structure or the degree of molecular activity. The sum of
microscopic forms of energy is the internal energy, denoted by U.
