WorksheetsFinal Exam in ME 223 - Part 1.2 - Elements
Total questions: 100
Worksheet time: 50mins
Name
Class
Date
1.
The properties for a unit mass and are intensive by definition such as specific volume.
a)
Intensive properties
b)
Extensive properties
c)
Specific properties
d)
Thermodynamic properties
2.
The condition as identified through the properties of the substance, generally defined by particular values of any two independent properties.
a)
State
b)
Point
c)
Process
d)
Flow
3.
The only base unit with a prefix kilo is _____.
a)
Kilogram
b)
Kilometer
c)
Kilojoule
d)
Kilopascal
4.
The force of gravity on the body.
a)
Weight
b)
Specific gravity
c)
Attraction
d)
Mass
5.
The mass per unit volume of any substance.
a)
Density
b)
Specific volume
c)
Specific weight
d)
Specific gravity
6.
The force of gravity on unit volume is _____.
a)
Density
b)
Specific volume
c)
Specific weight
d)
Specific gravity
7.
The reciprocal of density is _____.
a)
Specific volume
b)
Specific weight
c)
Specific gravity
d)
Specific heat
8.
Avogadro’s number, a fundamental constant of nature is the number of molecules in gram mole This constant is _____.
a)
6.05222x10²³
b)
6.02252x10²³
c)
6.20522x10²³
d)
6.50222x10²³
9.
The ratio of the gas constant to Avogadro’s number is:
a)
Maxwell’s constant
b)
Boltzmann’s constant
c)
Napier’s constant
d)
Joule’s constant
10.
The absolute zero on the Fahrenheit scale is at _____.
a)
-459.7°F
b)
459.7°F
c)
-273.25°C
d)
273.15°C
11.
Absolute temperature on the Fahrenheit scale are called:
a)
Degrees Rankine
b)
Degrees Kelvin
c)
Absolute Fahrenheit
d)
Absolute Celsius
12.
The absolute zero on the celcius scale is at _____.
a)
-459.7°F
b)
459.7°F
c)
-273.25°C
d)
273.15°C
13.
What is the absolute temperature in celsius scale?
a)
Degrees Rankine
b)
Degrees Kelvin
c)
Absolute Fahrenheit
d)
Absolute Celcius
14.
The Fahrenheit scale was introduced by Gabriel Fahrenheit of Amsterdam, Holland in what year?
a)
1592
b)
1742
c)
1730
d)
1720
15.
The centigrade scale was introduced by Andres Celcius in what year?
a)
1542
b)
1740
c)
1730
d)
1720
16.
The National Bureau of Standard uses, among others, the liquid vapor equilibrium of hydrogen at _____.
a)
-196°C
b)
196°C
c)
253°C
d)
253°C
17.
The national Bureau of Standard uses among others, the liquid vapor equilibrium of nitrogen at _____.
a)
-196°C
b)
196°C
c)
253°C
d)
-253°C
18.
The liquid vapor equilibrium of oxygen is at what temperature?
a)
197.82°C
b)
-197.82°C
c)
182.97°C
d)
-182.97°C
19.
The solid liquid equilibrium of mercury is at what temperature?
a)
38.87°C
b)
-38.87°C
c)
37.88°C
d)
-37.88°C
20.
The solid liquid equilibrium of Tin is at what temperature?
a)
-38.87°C
b)
38.87°C
c)
231.9°C
d)
231.9°C
21.
The solid liquid equilibrium of Zinc is at what temperature?
a)
231.9°C
b)
419.505°C
c)
444.60°C
d)
630.5°C
22.
The liquid vapor equilibrium of sulfur is at what temperature?
a)
231.9°C
b)
419.505°C
c)
444.60°C
d)
630.5°C
23.
The solid liquid equilibrium of Antimony is at what temperature?
a)
630.5°C
b)
419.505°C
c)
444.60°C
d)
231.9°C
24.
The solid liquid equilibrium of silver is at what temperature?
a)
630.5°C
b)
960.8°C
c)
1063°C
d)
1774°C
25.
The solid liquid equilibrium of gold is at what temperature?
a)
630.5°C
b)
960.8°C
c)
1063°C
d)
1774°C
26.
The solid liquid equilibrium of platinum is at what temperature?
a)
630.5°C
b)
960.8°C
c)
1063°C
d)
1774°C
27.
The solid liquid equilibrium of Tungsten is at what temperature?
a)
3730°C
b)
3370°C
c)
3073°C
d)
3037°C
28.
The device that measures temperature by the electromotive force.
a)
Thermometer
b)
Thermocouple
c)
Electro-thermometer
d)
Thermoseebeck
29.
The device that measure temperature by the electromotive force called thermocouple was discovered by:
a)
Galileo
b)
Fahrenheit
c)
Celsius
d)
Seebeck
30.
When two bodies isolated from other environment are in thermal equilibrium with a third body, two are in thermal equilibrium with each other.
a)
Zeroth law of thermodynamics
b)
First law of thermodynamics
c)
Second law of thermodynamics
d)
Third law of thermodynamics
31.
The total entropy of pure substance approaches zero as the absolute thermodynamics temperature approaches zero.
a)
Zeroth law of thermodynamics
b)
First law of thermodynamics
c)
Second law of thermodynamics
d)
Third law of thermodynamics
32.
If any one or more properties of as system change the system is said to have undergone a _____.
a)
Cycle
b)
Process
c)
Flow
d)
Control
33.
When a certain mass of fluid in a particular state passes through a series of processes and returns to its initial state it undergoes a:
a)
Revolution
b)
Rotation
c)
Process
d)
Cycle
34.
The term given to the collection of matter under consideration enclosed within a boundary.
a)
System
b)
Matter
c)
Environment
d)
Atoms
35.
The region outside the boundary or the space and matter external to a system:
a)
Ex - system
b)
Surrounding
c)
Matter
d)
Extension
36.
The true pressure measured above a perfect vacuum.
a)
Absolute pressure
b)
Gage pressure
c)
Atmospheric pressure
d)
Vacuum pressure
37.
The pressure measured from the level of atmospheric pressure by most pressure recording instrument like pressure gage and open ended manometer.
a)
Gage pressure
b)
Atmospheric pressure
c)
Barometer pressure
d)
Absolute pressure
38.
The pressure obtained from barometer reading.
a)
Absolute pressure
b)
Gage pressure
c)
Atmospheric pressure
d)
Vacuum pressure
39.
It is a form of energy associated with the kinetic random motion of large number of molecules.
a)
Internal energy
b)
Kinetic energy
c)
Heat
d)
Enthalpy
40.
The heat needed to change the temperature of the body without changing its phase.
a)
Latent heat
b)
Sensible heat
c)
Specific heat
d)
Heat transfer
41.
The heat needed by the body to change its phase without changing its temperature.
a)
Latent heat
b)
Sensible heat
c)
Specific heat
d)
Heat transfer
42.
The measure of the randomness of the molecules of a substance.
a)
Enthalpy
b)
Internal energy
c)
Entropy
d)
Heat
43.
The heat energy transferred to a substance at a constant pressure process is _____
a)
Enthalpy
b)
Heat
c)
Internal energy
d)
Entropy
44.
It is the energy stored within the body.
a)
Enthalpy
b)
Heat
c)
Internal energy
d)
Entropy
45.
A theoretically ideal gas which strictly follows Boyle’s law and Charle’s law of gases.
a)
Universal gas
b)
Perfect gas
c)
Combined gas
d)
Imperfect gas
46.
In a confined gas, if the absolute temperature is held constant, the volume is inversely proportional to the absolute pressure.
a)
Boyle’s law
b)
Charles law
c)
Dalton’s law
d)
Avogadro’s law
47.
In a confined gas if the absolute pressure is held constant the volume is directly proportional to the absolute temperature.
a)
Boyle’s law
b)
Charles law
c)
Dalton’s law
d)
Avogadro’s law
48.
The pressure exerted in a vessel by a mixture of gases is equal to the sum of the pressure that each separate gas would exert if it alone occupied the whole volume of the vessel.
a)
Boyle’s law
b)
Charles law
c)
Dalton’s law
d)
Avogadro’s law
49.
At equal volume at the same temperature and pressure conditions, the gases contain the same number of molecules.
a)
Boyle’s law
b)
Charles law
c)
Dalton’s law
d)
Avogadro’s law
50.
A process in which the system departs from equilibrium state only infinitesimally at every instant.
a)
Reversible process
b)
Irreversible process
c)
Cyclic process
d)
Quasi-static process
51.
A process which gives the same state/conditions after the system undergoes a series of processes.
a)
Reversible process
b)
Irreversible process
c)
Cyclic process
d)
Quasi-static process
52.
A thermodynamic system that generally serves as a heat source or heat sink for another system.
a)
Combustion chamber
b)
Heat reservoir
c)
Heat engine
d)
Stirling engine
53.
A thermodynamic system that operates continuously with only energy (heat and work) crossing its boundaries; its boundaries are impervious to the flow of mass.
a)
Heat engine
b)
Steady flow work
c)
Stirling engine
d)
Ericson engine
54.
A surface that is impervious to heat is _____.
a)
Isothermal surface
b)
Adiabatic surface
c)
Isochoric surface
d)
Isobaric surface
55.
One of the consequences of Einstein’s theory of relativity is that mass may be converted into energy and energy into mass the relation being given by the famous equation. E = mc². What is the value of the speed of light c?
a)
2.7797 x 10¹⁰ cm/s
b)
2.9979 x 10¹⁰ cm/s
c)
1.7797 x 10¹⁰ cm/s
d)
2.9979 x 10¹⁰ cm/s
56.
In the polytrophic process we have pvⁿ = constant, if the value of n is infinitely large, the process is called.
a)
Constant volume process
b)
Constant pressure process
c)
Constant temperature process
d)
Adiabatic process
57.
The thermodynamic cycle used in a thermal power plants is:
a)
Ericson
b)
Brayton
c)
Joule
d)
Rankine
58.
For the same heat input and same compression ratio:
a)
Both Otto cycle and diesel cycle are equally efficient
b)
Otto cycle is less efficient than diesel cycle
c)
Efficient depends mainly on working substance
d)
None of the above is correct
59.
A heat exchanger process where in the product of pressure and volume remains constant called:
a)
Heat exchanger process
b)
Isentropic process
c)
Throttling process
d)
Hyperbolic process
60.
Which of the following provides the basis for measuring thermodynamic property of temperature?
a)
Zeroth law of thermodynamics
b)
First law of thermodynamics
c)
Second law of thermodynamics
d)
Third law of thermodynamics
61.
Under ideal conditions, isothermal, isobaric, isochoric and adiabatic processes are;
a)
Dynamic processes
b)
Stable processes
c)
Quasi-static processes
d)
Static processes
62.
Isentropic flow is _____.
a)
Perfect gas flow
b)
Irreversible adiabatic flow
c)
Ideal fluid flow
d)
Reversible adiabatic flow
63.
Exhaust gases from an engine possess _____.
a)
Solar energy
b)
Kinetic energy
c)
Chemical energy
d)
Stored energy
64.
The extension and compression of a helical spring is an example of what process?
a)
Isothermal cycle
b)
Thermodynamic process
c)
Adiabatic process
d)
Reversible process
65.
At critical point the latent enthalpy of vaporization is _____.
a)
Dependent on temperature
b)
Zero
c)
Minimum
d)
Maximum
66.
If the temperature held constant and the pressure is increased beyond the saturation pressure, then the working medium must be:
a)
Saturated vapor
b)
Compressed liquid
c)
Saturated liquid
d)
Subcooled liquid
67.
The Clapeyron’s equation is applicable to:
a)
1 system in equilibrium
b)
A change of state
c)
A change of state when two phases are in equilibrium
d)
A change of state when water and water vapor are involved
68.
Equation of state for a single component can be any of the following except
a)
The ideal gas laws
b)
Any relationship interrelating 3 or more state functions
c)
Relationship mathematically interrelating thermodynamic properties of the material
d)
A mathematical expression defining a path between states
69.
The emf is a function of the temperature difference between the junction, a phenomenon called:
a)
Seebeck effect
b)
Stagnation effect
c)
Primming
d)
Electromotive force
70.
Which of the following statement about Van der Waals equation is correct?
a)
It is valid for all pressures and temperatures
b)
It represents a straight line on PV versus V plot
c)
It has three roots of identical value at the critical point
d)
The equation is valid for diatomic gases only
71.
The reaction of inertia in an accelerated body is called:
a)
Kinetic reaction
b)
Endothermic reaction
c)
Kinematic reaction
d)
Dynamic reaction
72.
Critical properties refer to
a)
extremely important properties, such as temperature and pressure
b)
heat required for phase change and important for energy production
c)
property values where liquid and gas phase are indistinguishable
d)
properties having to do with equilibrium conditions, such as the Gibbs and Helmholtz functions.
73.
Properties of non - reacting gas mixtures are given by:
a)
Geometric weighting
b)
Volumetric weighting
c)
Volumetric weighting for molecular weight and density and geometric weighting for all other properties except entropy
d)
Arithmetic average
74.
The stagnation state is called the isentropic stagnation state when the stagnation process is _
a)
Reversible as well dynamic
b)
Isotropic
c)
Adiabatic
d)
Reversible as well as adiabatic
75.
Which of the following statements about entropy is false?
a)
Entropy of a mixture is greater than that of its components under the same condition
b)
An irreversible process increases entropy of the universe
c)
Net entropy change in any closed cycle is zero
d)
Entropy of a crystal at 0°F is zero
76.
Is a measure of the energy that is no longer available to perform useful work within the current environment.
a)
Absolute entropy
b)
Absolute enthalpy
c)
Fugacity
d)
Molar Value
77.
A graph of enthalpy versus entropy for steam.
a)
Mollier Diagram
b)
Moody Diagram
c)
Steam Table
d)
Maxwell Diagram
78.
If a substance temperature is less than its saturation temperature, the substance is:
a)
Subcooled liquid
b)
wet vapor
c)
saturated vapor
d)
superheated vapor
79.
If a substance temperature is equal to its saturation temperature, the substance is a _____.
a)
Subcooled liquid
b)
wet vapor
c)
saturated liquid and vapor
d)
superheated vapor
80.
If a substance's temperature is greater than its saturation temperature, the substance is a _____.
a)
Subcooled liquid
b)
wet vapor
c)
saturated vapor
d)
superheated vapor
81.
What should be the temperature of both water and steam whenever they are present together?
a)
One hundred degrees centigrade
b)
Superheated temperature
c)
Saturation temperature for the existing pressure
d)
Boiling point of water at 101.325 kPa
82.
A manometer is an instrument that is used to measure:
a)
condensate water level
b)
air volume
c)
heat radiation
d)
air pressure
83.
What is the area under the curve of a temperature-entropy diagram?
a)
Work
b)
Heat
c)
Entropy
d)
Volume
84.
What do bodies at a temperature above absolute zero emit?
a)
Energy
b)
Heat of compression
c)
Heat of convection
d)
Thermal radiation
85.
In the absence of any irreversibilities, a thermoelectric generator, a device that incorporates both thermal and electric effects, will have an efficiency of a/an:
a)
Otto cycle
b)
Diesel cycle
c)
Carnot cycle
d)
Rankine cycle
86.
Both Stirling and Ericsson engines are:
a)
Carnot engines
b)
Brayton engines
c)
internal combustion engines
d)
external combustion engine
87.
The convergent section of a nozzle increases the velocity of the flow of the gas. What does it to do on its pressure?
a)
It decreases the pressure
b)
It increases the pressure
c)
Pressure equals the velocity
d)
Pressure become constant
88.
In a closed vessel, when vaporization takes place, the temperature rises. Due to the rising temperature, the pressure increases until an equilibrium is established between the temperature and pressure. The temperature of equilibrium is called _____.
a)
superheated temperature
b)
dew point
c)
boiling point
d)
ice point
89.
At steam point, the temperatures of water and its vapor at standard pressure are:
a)
unity
b)
in equilibrium
c)
undefined
d)
extremes or maximum
90.
When hot soup was served in a cup during dinner an engineer was so eager to drink it. Since it was hot, he added cubes of ice to cool the soup and stirred it. He noticed that the dew starts to form on the outermost surface of the cup. He wanted to check the temperature of the outermost surface of the cup. What is the temperature equal to?
a)
Superheated temperature
b)
Standard temperature
c)
Equal to zero
d)
Equal to air's dew point temperature
91.
What do you call a conversion technology that yields electricity straight from sunlight without the aid of a working substance like gas or steam without the use of any mechanical cycle?
a)
Power conversion
b)
Stirling cycle conversion
c)
Photovoltaic-energy conversion
d)
Solar thermal conversion
92.
Which of the following property of liquid extend resistance to angular or shear deformation:
a)
Viscosity
b)
Specific weight
c)
Specific gravity
d)
Density
93.
What is the pressure at the exit of a draft tube in a turbine?
a)
Below atmospheric
b)
Vacuum
c)
Above atmospheric
d)
Atmospheric
94.
When changes in kinetic energy of a compressed gas are negligible or insignificant, the work input to an adiabatic compressor is _____.
a)
equal to change in enthalpy
b)
zero
c)
negligible
d)
infinity
95.
What is the area under the cure of a pressure-volume diagram?
a)
Power
b)
Steady flow work
c)
Heat
d)
Nonflow work
96.
In Stirling and Ericsson cycle, regeneration can
a)
control efficiency
b)
decrease efficiency
c)
increase efficiency
d)
limit efficiency
97.
The first law of thermodynamics is based on which of the following principles?
a)
Conservation of mass
b)
Entropy-temperature relationship
c)
Enthalpy-entropy relationship
d)
Conservation of energy
98.
In a two-phase system, 30% moisture means
a)
70% vapor and 30% liquid
b)
30% liquid and 100% vapor
c)
70% liquid and 30% vapor
d)
30% vapor and 100% liquid
99.
At 101.325 kPa, the boiling point of water is 100 °C. If the pressure is decreased, the boiling temperature will:
a)
decrease
b)
increase
c)
remain the same
d)
drop to zero
100.
Which of the following is equivalent to 1 hp in Btu/hr?
a)
2545
b)
746
c)
778
d)
3.41
100 %
