MAE 284 FINAL UAH CERTIFICATION
EVALUATION 2026 QUESTIONS WITH
PRACTICE SOLUTION GRADED A+
◉ (1-1) first law of thermodynamics. Answer: energy is a
thermodynamic property
◉ (1-1) second law of thermodynamics. Answer: energy has quality
as well as quantity
◉ (1-2) dimensions. Answer: mass, length, time, temperature, etc
◉ (1-2) units. Answer: magnitudes assigned to dimensions
◉ (1-2) standard SI units. Answer: meters, kilograms, seconds,
kelvin, etc
◉ (1-2) conversion ratios. Answer: equal to one and are unitless
◉ (1-3) surroundings. Answer: region outside a system
, ◉ (1-3) boundary. Answer: real or imaginary surface that separates
the system from the surroundings
◉ (1-3) closed system. Answer: fixed amount of mass, no mass can
cross its boundary
◉ (1-3) isolated system. Answer: fixed amount of mass and energy
◉ (1-3) open system. Answer: properly selected region in space;
there is mass and energy flow; usually a compressor, turbine, or
nozzle
◉ (1-3) control boundary. Answer: real or imaginary boundaries of a
control volume
◉ (1-4) property. Answer: any characteristic of a system
◉ (1-4) intensive property. Answer: those that are independent of
the mass of a system
◉ (1-4) intensive property examples. Answer: temperature,
pressure, density, specific volume
EVALUATION 2026 QUESTIONS WITH
PRACTICE SOLUTION GRADED A+
◉ (1-1) first law of thermodynamics. Answer: energy is a
thermodynamic property
◉ (1-1) second law of thermodynamics. Answer: energy has quality
as well as quantity
◉ (1-2) dimensions. Answer: mass, length, time, temperature, etc
◉ (1-2) units. Answer: magnitudes assigned to dimensions
◉ (1-2) standard SI units. Answer: meters, kilograms, seconds,
kelvin, etc
◉ (1-2) conversion ratios. Answer: equal to one and are unitless
◉ (1-3) surroundings. Answer: region outside a system
, ◉ (1-3) boundary. Answer: real or imaginary surface that separates
the system from the surroundings
◉ (1-3) closed system. Answer: fixed amount of mass, no mass can
cross its boundary
◉ (1-3) isolated system. Answer: fixed amount of mass and energy
◉ (1-3) open system. Answer: properly selected region in space;
there is mass and energy flow; usually a compressor, turbine, or
nozzle
◉ (1-3) control boundary. Answer: real or imaginary boundaries of a
control volume
◉ (1-4) property. Answer: any characteristic of a system
◉ (1-4) intensive property. Answer: those that are independent of
the mass of a system
◉ (1-4) intensive property examples. Answer: temperature,
pressure, density, specific volume
