Test 1

Question 1

System

Answer 1

Anything that we want to measure

It is separated from the surroundings by system boundaries

Question 2

Open System

Answer 2

region in space that allows mass to cross bounderies

Question 3

Closed System

Answer 3

contains a fixed amount of mass

Question 4

Pressure absolute equation

Answer 4

P_abs = P_gauge + P_atm

Question 5

η (efficiency)

Answer 5

Power out divided by power in

Question 6

Different types of phase changes

Answer 6

Melting, Evaporation, Freezing, Deposition, Sublimation

Question 7

Melting

Answer 7

Solid -> liquid

Question 8

Evaporation

Answer 8

Liquid -> Vapor

Question 9

Freezing

Answer 9

liquid -> solid

Question 10

Deposition

Answer 10

Vapor -> solid

Question 11

Sublimation

Answer 11

Solid -> vapor

Question 12

Can pressure be negative?

Answer 12

No, the minimum is 0 psia.

Question 13

what is the quality of a substance at x = 0

Answer 13

Saturated Liquid

Question 14

what is the quality of a substance at x = 1

Answer 14

Saturated Vapor

Question 15

How do you calculate the change in potential energy when an object is lifted?

Answer 15

ΔPE=mgΔh

Question 16

Equation for v (specific volume)

Answer 16

V/m

Question 17

How to solve for u (internal energy)

Answer 17

u = u_f + x(u_g-u_f)

Question 18

Interpolation equation

Answer 18

(v_known - v_f) / (v_g-v_f)

Question 19

What is the Triple Point

Answer 19

the specific temperature and pressure at which all three phases of a substance (solid, liquid, and gas) can coexist in equilibrium

Question 20

equation for ideal gasses

Answer 20

PV = mRT

Question 21

What are the standard processes

Answer 21

Isothermal process, Isobaric Process, Isochoric Process, Isometric process, Isometric Process, Adiabatic Process

Question 22

Process definition

Answer 22

the changing of states

Question 23

Isothermal process

Answer 23

Constant Temperature

Question 24

Isometric Process

Answer 24

Constant Pressure

Question 25

Isobaric Process

Answer 25

Constant Pressure

Question 26

Isochoric Process

Answer 26

Constant Volume

Question 27

Adiabatic Process

Answer 27

No heat exchange between system and surroundings

Question 28

what is energy equal to (made up of)

Answer 28

E = u + KE + PE

Question 29

How is energy transferred

Answer 29

Heat, Work, Mass transfer

Question 30

The 5 States

Answer 30

Compressed Liquid, Saturated Liquid, Liquid/Vapor, Saturated Vapor, Super Heated Vapor

Question 31

Critical Point

Answer 31

The specific temperature and pressure at which the distinction between a liquid and gas phase of a substance disappears

Question 32

Left side of a T or P vs V graph

Answer 32

Subcooled Liquid

Question 33

Middle of the T or P vs V graph

Answer 33

V + L (vapor + liquid)

Question 34

Right side of a T or P vs V graph

Answer 34

SHV (superheated vapor)

Question 35

How are the temperature and pressure of liquid vapor minutes always linked

Answer 35

Directly Proportional

Question 36

What substances do we treat as an ideal gas

Answer 36

N2 O2 Air H2 CO CO2

Question 37

What are the "Perfect" or "noble" gases

Answer 37

He Xe H_2 Ne Ar

Question 38

How do we identify perfect gases on the periodic table

Answer 38

on the far right side of the periodic table

Question 39

Can you condense an ideal gas

Answer 39

No

Question 40

Do we treat H2O as an ideal gas

Answer 40

No

Question 41

Do we treat R-134 as an ideal gas

Answer 41

No

Question 42

What is the phase of an ideal gas

Answer 42

Gas

Question 43

Do ideal gas on T-v and P-v diagrams have vapor domes

Answer 43

No, near nonexistent critical point

Question 44

Equation for volumetric flow rate

Answer 44

V dot = v (velocity) * A (area)

Question 45

Equation for mass flow rate

Answer 45

m dot = density * V dot (volumetric flow rate)