Final

Question 1

Is mass constant in a closed system?

Answer 1

Yes Mass is constant

Question 2

True or False. In steady state for an open system is Mass in equal to mass out?

Answer 2

True

Question 3

True or False

Q (Heat transfer) +: in and -: out

Answer 3

True

Question 4

True or False

W(Work done) +: out -:in

Answer 4

True

Question 5

True or False

You can count out Heat transfer and work as well as potential energy when working with a nozzle or Diffuser

Answer 5

True

Question 6

What is the formula to convert Celsius to Kelvin

Answer 6

K= C+273

Question 7

What is formula to convert Fahrenheit to Celsius

Answer 7

F=1.8C+32

Question 8

Is the formula for a refrigerator COPr or COPhp?

Answer 8

COPr

Question 9

Is a formula for a heat pump COPr or COPhp

Answer 9

COPhp

Question 10

What is entropy?

Answer 10

A thermodynamic quantity representing the unavailability of a systems thermal energy for conversion into mechanical work. Often interpreted as degree of disorder or randomness

Question 11

Does entropy need heat transfer?

Answer 11

Yes it requires heat transfer

Question 12

Does entropy change in an isentropic process?

Answer 12

No entropy stays the same

Question 13

What does adiabatic mean?

Answer 13

It means no heat transfer

Question 14

What does reversible mean?

Answer 14

Entropy generation is equal to zero

Question 15

In an Isentropic turbine are you loosing or gaining pressure?

Answer 15

Loosing pressure

Question 16

In an isentropic Compressor are you gaining or loosing pressure

Answer 16

You are gaining

Question 17

If X destroyed is >0 is it an irreversible, Reversible it Impossible process

Answer 17

Irreversible Process

Question 18

If X destroyed is =0 is it an irreversible, Reversible or Impossible process

Answer 18

Reversible process

Question 19

If a destroyed is < 0 is it an irreversible, Reversible it Impossible process

Answer 19

Impossible process

Question 20

What is the Conservation of mass principle

Answer 20

Mass like energy is a conserved property and it cannot be created or destroyed during a process.

Question 21

What is flow work or flow energy?

Answer 21

The work of energy required to push the mass into or out of the control volume.

Question 22

What is a steady flow process

Answer 22

A process during which fluid flows through a control volume steadily

Question 23

What is a nozzle?

Answer 23

A nozzle is a device that increases the velocity of a fluid at the expense of pressure

Question 24

What is a diffuser?

Answer 24

A device that increases the pressure of a fluid by slowing it down.

Question 25

What is an Unsteady flow process

Answer 25

A process involved changes within the control volume with time

Question 26

What is a resucito that supplies energy in the form of heat called?

Answer 26

It’s called a source

Question 27

What is a reservoir that absorbs energy in the form of heat called

Answer 27

It’s called a sink

Question 28

What is the Kelvin Planck Statement

Answer 28

It is impossible for any device that operates on a cycle to receive heat from a single reservoir and produce a net amount of work

Question 29

What is the Clausius statement

Answer 29

It is impossible to construct a device that operates in a cycle and produces no effect other than the transfer of heat from a lower temperature body to a higher temperature body

Question 30

What is a Perpetual motion machine

Answer 30

Any device that violates the first or second law

Question 31

What is a Reversible Process

Answer 31

A process that can be reversed without leaving any trace on the surroundings

Question 32

What is an irreversible process

Answer 32

A process that is not reversible

Question 33

What is a Carnot Cucle

Answer 33

A cycle that is composed of four reversible processes, two isothermal and two adiabatic