1. What element exists in diatomic form at 25° C and 1 atm?
Answer
Correct Answer:
Nitrogen
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2. What does the word "spring" mean in the context of engineering?
Answer
Correct Answer:
Work
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3. What is done to change the length of a spring?
Answer
Correct Answer:
Spring work
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4. How many times do you need to increase the size of a spray pond due to air loss?
Answer
Correct Answer:
25 to 50 times
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5. A spray pond requires 25 to 50 times the area of what other kind of pond?
Answer
Correct Answer:
Cooling tower
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6. What does a spray pond require that a cooling tower does not?
Answer
Correct Answer:
25 to 50 times the area
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7. What is the product of the local acceleration of gravity and the substance density?
Answer
Correct Answer:
Weight
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8. What is the definition of density?
Answer
Correct Answer:
Volume per unit mass
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9. What is the reciprocal of density?
Answer
Correct Answer:
Volume
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10. What is the property that per unit mass is extensive properties?
Answer
Correct Answer:
Specific properties
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11. What are the known as for solids and liquids?
Answer
Correct Answer:
Or incompressible substances
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12. What is the ratio Cp/Cv referred to as?
Answer
Correct Answer:
Heat ratio
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13. What is related to the changes in internal energy?
Answer
Correct Answer:
Cv
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14. What is the measurement of a substance's change in enthalpy per unit change in temperature when it's at constant pressure?
Answer
Correct Answer:
Cp
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15. What is the definition of heat?
Answer
Correct Answer:
The energy required to raise the temperature of a unit mass of a substance by one degree
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16. What is defined as the energy required to raise the temperature of a unit mass of a substance by one degree?
Answer
Correct Answer:
Heat
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17. What is the standard temperature for water?
Answer
Correct Answer:
4°C
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18. What is the term used to describe the kind of engines that have a spark plug to ignite the air fuel mixture?
Answer
Correct Answer:
Spark-ignition
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19. What are reciprocating engines?
Answer
Correct Answer:
Spark-ignition (SI) engines
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20. Sonic flow occurs when a flow has a what?
Answer
Correct Answer:
M =1
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21. What happens to the flow when the Mach number is 1?
Answer
Correct Answer:
Sonic flow
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22. What is the maximum amount of solid that can be dissolved in a liquid at a specified temperature?
Answer
Correct Answer:
Solubility
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23. What does the term "solid phase" refer to?
Answer
Correct Answer:
Molecules arranged in a three-dimensional pattern
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24. In a solid, molecules are said to be arranged in what?
Answer
Correct Answer:
A three-dimensional pattern
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25. What is mounted on the frame of a Sling psychrometer?
Answer
Correct Answer:
Both a dry-bulb thermometer and a wet-bulb temperature
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26. What device has both a dry-bulb thermometer and a wet-bulb temperature mounted on it so that when it is swung through the air both the wet-and dry-bulb temperatures can be read?
Answer
Correct Answer:
Sling psychrometer
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27. What kind of reactions are simultaneous reactions?
Answer
Correct Answer:
Chemical
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28. What are chemical reactions that involve two or more reactions occurring at the same time called?
Answer
Correct Answer:
Simultaneous reactions
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29. What is the process of lowering the temperature of atmospheric air when no moisture is removed?
Answer
Correct Answer:
Cooling
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30. What does the process of cooling without removing moisture involve?
Answer
Correct Answer:
Is the process of lowering the temperature of atmospheric air
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31. What is a system in which there is the absence of electrical, magnetic, gravitational, motion, and surface tension effects?
Answer
Correct Answer:
Compressible system
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32. How many times per second does shaft work occur?
Answer
Correct Answer:
Revolutions
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33. What is the portion of the energy of a system associated with the kinetic energies of the molecules?
Answer
Correct Answer:
Sensible energy
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34. Who discovered the Seebeck effect?
Answer
Correct Answer:
Thomas Seebeck
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35. What is the second law efficiency of various steady-flow devices determined from?
Answer
Correct Answer:
HII = (exergy recovered)/(exergy supplied)
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36. What is an energy interaction not accompanied by?
Answer
Correct Answer:
Entropy transfer
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37. What is an energy interaction that is not accompanied by entropy transfer?
Answer
Correct Answer:
Work
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38. In what way are expressed dimensions expressed?
Answer
Correct Answer:
In terms of the primary dimensions
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39. What does the term "derived dimensions" refer to?
Answer
Correct Answer:
Secondary dimensions
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40. It is called a what because of its similarity to the previous technology?
Answer
Correct Answer:
Scramjet
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41. At what speed does air flow through a Scramjet engine?
Answer
Correct Answer:
Supersonic
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42. What is the temperature at which a pure substance changes phase?
Answer
Correct Answer:
Tsat
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43. What is the term for a substance changing phase at a given temperature?
Answer
Correct Answer:
Saturation pressure
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44. What is the name of the pressure at which a substance changes phase?
Answer
Correct Answer:
Psat
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45. What is the line that meets the saturated liquid line at the critical point?
Answer
Correct Answer:
Saturated vapour line
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46. At what temperature is saturated vapour?
Answer
Correct Answer:
About to condense
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47. A vapour that is about to condense is called what?
Answer
Correct Answer:
Saturated vapour
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48. To what state is saturated vapour usually to be compared?
Answer
Correct Answer:
Condense
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49. Where does the saturated liquid-vapour mixture region, or the wet region, occur?
Answer
Correct Answer:
Under the dome
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50. What kind of mixture is saturated liquid-vapour mixture?
Answer
Correct Answer:
Coexist in equilibrium
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51. What is a mixture of the liquid and vapour phases that coexist in equilibrium?
Answer
Correct Answer:
Saturated liquid-vapour mixture
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52. What is the liquid line that forms a dome at the critical point?
Answer
Correct Answer:
Saturated liquid line
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53. What kind of liquid is about to vaporize?
Answer
Correct Answer:
Saturated
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54. What is a liquid that is about to vaporize?
Answer
Correct Answer:
Saturated liquid
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55. What condition is air that can't hold any more water?
Answer
Correct Answer:
Saturated
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56. What will occur when saturated air is witheld?
Answer
Correct Answer:
Condense
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57. What can't be added to saturated air?
Answer
Correct Answer:
Moisture
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58. What are the high-pressure combustion gases then expanded in a nozzle?
Answer
Correct Answer:
Rocket
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59. What do rocket exhausts give off at very high velocities?
Answer
Correct Answer:
Thrust
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60. What is Wrev defined as?
Answer
Correct Answer:
The maximum amount of useful work that can be produced
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61. What is defined as the maximum amount of useful work that can be produced?
Answer
Correct Answer:
Reversible work
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62. What is the definition of Reversible steady-flow work?
Answer
Correct Answer:
The negative of the integral of the specific volume-pressure product
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63. What is defined as the negative of the integral of the specific volume-pressure product?
Answer
Correct Answer:
Reversible steady-flow work
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64. What is a process that can be reversed without leaving any trace on the surroundings?
Answer
Correct Answer:
Reversible process
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