General Engineering and Applied Sciences, PDF

1. Thermodynamics is the study of heat and its transformation which stems from Greek words meaning _________. a. transformation of heat b. transformation of energy c. movement of heat d. movement of matter 2. What is the Si unit for temperature? a. Kelvin b. Celsius c. Fahrenheit d. Rankine 3. The e...

1. Thermodynamics is the study of heat and its transformation which stems from Greek words meaning _________. a. transformation of heat b. transformation of energy c. movement of heat d. movement of matter 2. What is the Si unit for temperature? a. Kelvin b. Celsius c. Fahrenheit d. Rankine 3. The energy that flows from higher temperature object to a lower temperature object because of the difference in temperature is called a. heat b. temperature c. thermodynamics cycle d. energy flow 4. The amount of heat energy per kilogram that must be added or removed when a substance changes from one phase to another. a. specific heat b. heat of expansion c. latent heat d. useful heat 5. The change in physical size of a substance when its temperature changes. a. intensive property b. extensive property c. volume expansion d. thermal expansion 6. A stress which develops within an object when it attempts to expand or contract in response to a temperature changes, but cannot, due to being held rigidly in place. a. elongation b. thermal stress c. expansion contraction d. thermal expansion 7. The energy associated with individual molecules in a gas, liquid or solid. a. Specific Energy b. Molecular Energy c. Internal Energy d. Phase Energy 8. The heat Q per unit mass per degree change in temperature that must be supplied or removed to change the temperature of a substance. a. Specific Heat Capacity b. Latent Heat c. Heat of Transformation d. Internal Heat 9. The pressure of the vapor phase of a substance that is in equilibrium with the liquid or solid phase. a. Phase Pressure b. Equilibrium Vapor Pressure c. Specific Pressure d. Equilibrium Phase Pressure 10. Vapor pressure depends only on _________. a. pressure b. force c. volume d. temperature 11. A plot of pressure vs. temperature for a given substance showing the various phases possible for that particular substance. a. Phase diagram b. P-T diagram c. Wein Diagram d. Histogram 12. _________ is the grand total of all energies inside a substance. a. Internal Energy b. Grand Energy c. Atomic Energy d. Elemental Energy 13. The _________ is defined as the amount of heat required to change the temperature of 1 gram of water by 1 Celsius degree. a. specific heat b. latent heat c. Joule d. calorie 14. _________ is a measure of the average kinetic energy per molecule in a substance. a. movement b. temperature c. heat d. mass 15. _________ the very small KE still present in molecules at absolute zero temperature. a. internal KE b. Atomic kinetic energy c. Zero-Point Energy d. Subliminal Energy 16. Convert the change of temperature from 20˚C to 30˚C to Kelvin scale. a. 10 K b. 293 K c. 303 K d. 273 K 17. _________ is a thermodynamic potential which measures the “useful” work obtainable from a closed thermodynamic system at a constant temperature and volume. a. useful work b. energy consumed c. Helmholtz free energy d. Kinetic Energy 18. How much will the length of a 1.0 km section of concrete highway change if the temperature varies from -15˚C in winter to 41˚C in summer? a. 0.67 m b. 2.2 m c. 3.1 m d. 0.47 m 19. Two 12 ft sections of aluminium siding are placed end to end on the outside wall of house. How large a gap should be left between the pieces to prevent buckling if the temperature can change by 55˚C? a. 0.21 m b. 0.18 m c. 0.31 in d. 0.18 in 20. What is the amount of radiant energy received each second over each square meter that is at right angles to the sun’s rays at the top of the atmosphere? a. 1400 J b. 6000 J c. 10000 J d. 800 J 21. _________ is a thermodynamic potential that measures the “useful” or process-initiating work obtainable from an isothermal, isobaric thermodynamic system. a. Du-Pont Potential b. Gibbs free energy c. Rabz-Eccles Energy d. Claussius Energy 22. All the energy we consume ultimately becomes _________. a. heat b. depleted c. exhausted d. work 23. _________is the partial pressure of water vapor at the existing temperature divided by the equilibrium vapor pressure of water at the existing temperature. a. vacuum pressure b. relative humidity c. absolute pressure d. vapor pressure 24. _________ is the transition of a given substance from the solid to the gas phase with no intermediate liquid stage. a. Convection b. Conduction c. Radiation d. Sublimation 25. A process in which heat energy is transferred by the flow of fluid. a. Convection b. Conduction c. Radiation d. Sublimation 26. In order to use a substance to make a thermometer the substance must _________ with a temperature change. a. expand b. contract c. change d. increase 27. For most solids, the coefficient of volume expansion is _________ the coefficient of linear expansion. a. unrelated to b. proportional to c. twice d. three times 28. The volume of a given amount of water _________ as the temperature decreases from 4˚C to 0˚C. a. decreases b. increases c. remains constant d. none of the above 29. The gas in a constant gas thermometer cooled to absolute zero would have _________. a. no volume b. no pressure c. zero temperature at all scales d. none of the above 30. On a day when the partial pressure of water vapor remains constant, what happens as the temperature rises? a. the relative humidity increases b. the relative humidity decreases c. the relative humidity remains constant d. the air would eventually become saturated 31. The flow of a fluid when heat is transferred by convection. a. placidity b. mass flow c. convection current d. heat transfer 32. An idealized perfect absorber and perfect emitter of radiation. a. elastic material b. transponder material c. Teflon d. blackbody 33. A process by which heat is transferred through a material without a bulk movement of the material. a. Convection b. Conduction c. Radiation d. Emission 34. Is the amount of a substance that contains Avogadro’s number of atoms/molecules. a. mass b. matter c. gram-mole d. volume 35. The distribution of particle speeds in an ideal gas at a given temperature. a. velocity of propagation b. escape velocity c. Maxwell speed Distribution d. terminal velocity 36. A convection process in which an external device, such as a fan, is used to produce the fluid flow. a. Forced Convection b. External Convection c. Placid Convection d. Thermionic Convection 37. A _________ is a quantity whose value at any state is independent of the path or process used to reach that state. a. cycle b. path function c. point function d. process 38. A _________ is a quantity whose value depends on the path followed during a particular change in state. a. path function b. point function c. process d. cycle 39. The contact surface shared by both the system and the surroundings is called _________. a. wall b. boundary c. interface d. intersection 40. A closed system is also known as _________. a. isolated system b. closed container c. control mass d. control volume 41. Open system is also known as _________. a. isolated system b. closed container c. control mass d. control volume 42. Liquid hydrogen boils at 17K. What is the temperature in degrees Celsius? a. 290 b. 63 c. -120 d. -256 43. When a solid melts, a. the temperature of the substance increases. b. the temperature of the substance decreases. c. heat leaves the substance. d. heat enters the substance. 44. How many kilocalories of heat are required to heat 750 g of water from 35˚C to 55˚C. a. 15 b. 1500 c. 1.5 x 10^4 d. 6.3 x 10^4 45. Which of the following does not determine the amount of internal energy an object has? a. temperature b. amount of material c. type of material d. shape of the object 46. Which of the following have the highest thermal conductivities? a. liquids b. gases c. metals d. solids other than metals 47. Identical objects of four different materials are heated to the same high temperature. Which of the following would least likely burn your hand if touched? a. aluminium b. brass c. glass d. concrete 48. As we heat a gas at constant pressure, its volume a. increases b. decreases c. stays the same d. none of the above 49. The volume of an ideal gas is directly proportional to its a. pressure b. Celsius temperature c. Kelvin temperature d. Fahrenheit temperature 50. An ideal gas is maintained at constant temperature. If the pressure on the gas is doubled, the volume is a. increased fourfold b. doubled c. reduced by half d. decreased by a quarter 51. If the Kelvin temperature of an ideal gas is doubled, what happens to the rms speed of the molecules in the gas? a. it increases by a factor of square root of 2 b. it increases by a factor of 2 c. it increases by factor of 4 d. none of the above 52. A function of state that is associated with disorder in the system and environment. a. enthalpy b. entropy c. law of diminishing return d. Lenz’ Law 53. No volume changes occur during this type of process a. Isobaric process b. Isomillimetric process c. Isocaloric process d. Isochoric process 54. The boiling of water into steam in an open container is an example of a/an _________ process. a. adiabatic b. isochoric c. isobaric d. zero work 55. When liquid water is converted to steam at 100˚C, the entropy of water a. increases b. decreases c. remains the same d. none of the above 56. Only energy can cross the boundaries. a. b. c. d. Closed system Open system Isolated system Isoenergetic system 57. The temperature at which the vapor pressure exactly equals one atm is called _________. a. boiling temperature b. normal boiling point c. triple point d. point of infliction 58. Mixture of liquid and steam of the same substance in which both are at saturation temperature. a. dry steam b. current steam c. wet steam d. aerosol 59. The term _________ is traditionally used to describe steam issuing from condensate receiver vents and open-ended condensate discharge lines from steam traps. a. dry steam b. wet steam c. phase steam d. flash steam 60. Defined as the ratio of weight of dry steam to the weight of stuff. a. dryness fraction b. Vaporization c. fusion d. super heated steam 61. What device measures infrared radiation below? a. thermocouple b. thermopile c. thermodynamic device d. thermos 62. When an object undergoes thermal expansion, a. any holes in the object expand as well b. any holes in the object remain the same c. mass increases d. molecular activities would cease 63. _________ is the quantity of heat required to raise the temperature of one pound of water 1 F˚ from 63 ˚F to 64 ˚F. a. one Joule b. one calorie c. one watt d. one BTU 64. Boiling temperature of a material is dependent on its _________. a. volume b. power c. heat d. pressure 65. Thermos was invented by _________. a. Sir Arthur Conan Doyle b. Sir Fredrich the Great c. Thomas Edison d. Sir James Dewar 66. Most cooking activities involve _________ process. a. Isochoric b. Isothermal c. Isobaric d. Isovolumic 67. Adiabatic heating and Adiabatic cooling really means _________ and _________ respectively. a. raising the temp and lowering the temp b. maintaining the pressure and changing the temperature c. decreasing the volume and increasing the pressure d. lowering the temp and raising the temp 68. The statement “heat cannot by itself flow from one body into a hotter body” is governed by _________. a. the first law of thermodynamics b. the second law of thermodynamics c. the third law of thermodynamics d. the zeroth law of thermodynamics 69. It is impossible for any process to have as its sole result the transfer of heat from a cooler to a hotter body a. Carnot’s statement b. Clausius statement c. Rankine statement d. Gauss statement 70. _________ is the average distance a molecule moves before colliding with another molecule. a. mean free path b. path allowance c. compacting factor d. molecular space 71. Find the pressure due to a column of mercury 74.0 cm high. a. 91.80 x 10^3 N/m^2 b. 73.56 x 10^2 N/m^2 c. 9.86 x 10^4 N/m^2 d. 87.2 x 10^4 N/m^2 72. Roughly what is the total weight of air in the entire earth? a. 1 x 10^5 tons b. 2 x 10^6 tons c. 6 x 10^15 tons d. 8 x 10^10 tons 73. _________ is defined as that equivalent to the pressure due to a column of mercury 76cm long. a. surface pressure b. gage pressure c. standard atmospheric pressure d. isobaric pressure 74. If any external pressure is applied to a confined fluid, the pressure will be increased at every point in the fluid by the amount of the external pressure is known as _________. a. Torricelli’s law b. Barometric law c. Newton’s Second law d. Pascal’s law 75. What type of pressure cannot be used for Boyle’s Law? a. Atmospheric Pressure b. Gauge Pressure c. Surface Pressure d. Isobaric Pressure 76. To displace a cubic foot of fresh water, you need _________ force. a. 62.4 lb b. 9.81 lb c. 76 lb d. 760 lb 77. The force per unit length across such a line in the surface is called _________. a. force per length b. surface tension c. Pressure d. Density 78. The speed at which a liquid escapes from a vessel through an orifice is given by _________. a. Archimedes Principle b. Evangelista’s Law c. Torricelli’s Theorem d. Bernoulli’s Equation 79. The process of one substance mixing with another because of molecular motion is called _________. a. diffusion b. viscosity c. streamline flow d. solution 80. When was the Ninth General Conference on Weights and Measures decided to abandon centigrade and used Celsius Instead? a. 1950 b. 1936 c. 1957 d. 1948 81. _________ is the temperature to which the air must be cooled, at constant pressure, to produce saturation. a. relative humidity b. triple point temperature c. dew point d. critical point 82. _________ is a succession of changes that ends with the return of the body or system to its initial state. a. process b. system c. equilibrium d. cycle 83. Intensive properties of a system are called _________. a. Bulk Properties b. Innate Properties c. Natural Properties d. Inside Properties 84. In thermodynamics, a throttling process, also called a _________, is a type of isenthalpic process where a liquid or gas is cooled as it passes from a higher pressure state to a lower pressure state. a. Rankine Process b. Carnot Cycle c. Joule-Thomson process d. Refrigeration process 85. Gasoline and Diesel Engines are best described by the _________. a. Otto Cycle b. Burnign Cycle c. Shikki Cycle d. Shapa R’ Elli Cycle 86. Twenty grams of ice at 0˚C melts to water at 0˚C. How much does the entropy of the 20g change in this process? a. 30.5 J/K b. 24.6 J/K c. 21.3 J/K d. 15.7 J/K 87. The first law of thermodynamics is based on which of the following principles? a. conservation of mass b. the enthalpy-entropy relationship c. action – reaction d. conservation of energy 88. If a system absorbs 500 cal of heat at the same time does 400J of work, find the change in internal energy of the system. a. 1400 J b. 1700 J c. 1900 J d. 1500 J 89. A gas is enclosed in a cylinder with a weighted piston as the top boundary. The gas is heated and expands from a volume of 0.04 m3 to 0.10 m3 at a constant pressure of 200 kPa. Find the work done on the system. a. 5 kJ b. 15 kJ c. 10 kJ d. 12 kJ 90. A simple steam engine receives steam from the boiler at 180˚C and exhausts directly into the air at 100˚C. What is the upper limit of its efficiency? a. 11.28 % b. 36.77 % c. 20.36 % d. 17.66 % 91. Heat which causes a change in temperature of a substance. a. Latent heat b. Sensible heat c. Specific heat d. Heat of Fusion 92. Who coined the term latent heat? a. John Thompson b. Studey Baker c. Joe di Maggio d. Joseph Black 93. Which of the following cannot be measured by a thermometer? a. Latent Heat b. Sensible Heat c. Specific Heat d. Heat of Fusion 94. It is generally accepted as a law of nature that although one may closely approach 0 Kelvin it is impossible actually to reach it. a. First Law of thermodynamics b. Second Law of thermodynamics c. Third Law of thermodynamics d. Zeroth Law of thermodynamics 95. One calorie is equal to _________. a. 1/180 W.h b. 1/860 W.h c. 1/360 W.h d. 1/250 W.h 96. A _________ is a reversible process in which there is transfer of heat and takes place according to the relation pV^n=C where n is any constant. a. Polytropic process b. Entropy c. Ideal Gas Law d. Carnot Cycle 97. The flow through an open system is _________ if all properties at each point within the system remain constant with respect to time. a. streamline flow b. steady flow c. constant flow d. algebraic flow 98. The most efficient cycle that can operate between two constant temperature reservoir is the _________. a. Otto Cycle b. Lazare Cycle c. Isothermal Cycle d. Carnot Cycle 99. The flow energy of 150 L of a fluid passing a boundary to a system is 110 kJ. Determine the pressure at this point a. 733.33 kPa b. 833.33 kPa c. 933.33 kPa d. 633.33 kPa 100. Who is the father of thermodynamics? a. Lazare Carnot b. Sadi Carnot c. William Thompson d. Rudolf Classius