AREA III - Engineering Thermodynamics Flashcards

1
Q

It deals with heat and work and these properties of substances that bear a relation to heat and work

A

Thermodynamics

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2
Q

its value for an overall system is the sum of its values for the parts into which the system is divided

A

Extensive property

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3
Q

its value is independent of the size or extent of a system and may vary from place to place within the system at any moment

A

Intensive property

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4
Q

It is a measure of the internal energy of a body

A

Temperature

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5
Q

the number of degrees above absolute zero expressed in Kelvins or Rankine.

A

Absolute temperature

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6
Q

It is the normal (perpendicular) force exerted by a fluid per unit area against which the force is exerted.

A

Pressure

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7
Q

It is the measure of pressure above zero.

A

Absolute pressure

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8
Q

It is measured above existing atmospheric pressure.

A

Gage pressure

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9
Q

What is the Standard atmospheric pressure?

A

101.3 kPa

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10
Q

mass per unit volume

A

mass per unit volume

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11
Q

volume per unit mass, reciprocal of density

A

Specific volume

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12
Q

the quantity of energy required to raise the temperature of a unit mass
by 1 K.

A

Specific Heat

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13
Q

States that when two bodies have equality of temperature with a third body, they in turn
have equality of temperature with each other.

A

Zeroth law

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14
Q

also known as the Conservation of Energy principle, states that energy can
neither be created not destroyed, it can only change forms.

A

First Law of Thermodynamics

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15
Q

It deals with the quality of energy (energy degradation).

A

Second Law of Thermodynamics

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16
Q

It states that It is impossible to construct a device that will operate in a
cycle and produce no effect other than the raising of a weight and the exchange of
heat with a single reservoir.

A

Kelvin-Planck statement

17
Q

It states that It is impossible to construct a device that operates in a cycle and
produces no effect other than the transfer of heat from a cooler body to a hotter body.

A

Clausius statement

18
Q

states that the entropy of a perfect crystal is zero at the absolute zero of temperature

A

Third law of Thermodynamics

19
Q

amount of heat added to or subtracted from a substance when unit weight of the material changes 1° in temperature

A

Coefficient of Thermal Capacity

20
Q

fraction by mass of the vapor in the liquid-vapor mixture.

A

Quality (x) of a two-phase mixture

21
Q

The amount of heat required to change unit mass of a pure substance from the saturated liquid state to the saturated vapor state, the pressure (or temperature) remaining constant.

A

Enthalpy (or latent heat) of vaporization

22
Q

the amount of heat required to change unit mass of a pure substance from the solid state to the vapor state, the pressure (or temperature) remaining constant

A

Enthalpy (or latent heat) of sublimation

23
Q

the amount of heat required to change unit mass of a pure substance from the solid state to the liquid state, the pressure (or temperature) remaining constant.

A

Enthalpy (or latent heat) of fusion

24
Q

In Boyle’s Law, which variable is constant?

A

Temperature

25
Q

In Charles’ law, which variable is constant?

A

Pressure

26
Q

In Gay-Lussac’s Law, which variable is constant?

A

Volume