Thermodynamics MCQ
1. When steam condenses into water, __________.
Answer
Correct Answer:
Heat is given off by the water
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2. What type of gas analyzer is used to measure the composition of combustion gases?
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3. What is the name of the device used to analyze the composition of combustion gases?
Answer
Correct Answer:
Orsat gas analyzer
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4. What is an example of a control volume?
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5. What is another name for an arbitrary region in space?
Answer
Correct Answer:
Open system
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6. What does the open feedwater heater do?
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7. What does the term "octane rating" refer to?
Answer
Correct Answer:
Engine knock resistance
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8. What is a measure of the engine knock resistance of a fuel?
Answer
Correct Answer:
Octane rating
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9. What could the energy of nuclear energy be associated with?
Answer
Correct Answer:
Strong bonds
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10. What is the tremendous amount of energy associated with the strong bonds within the nucleus of the atom itself?
Answer
Correct Answer:
Nuclear energy
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11. What does a nozzle decrease pressure with?
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12. What is a type of device that increases the velocity of a fluid?
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13. What is the process of a normal shock wave considered to be?
Answer
Correct Answer:
Supersonic to subsonic flow
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14. A nonreacting gas mixture is a single substance that could be treated as a pure substance as long as it is what?
Answer
Correct Answer:
Homogeneous
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15. What is a nonreacting gas mixture?
Answer
Correct Answer:
A mixture of gases not undergoing a chemical reaction
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16. A nonreacting gas mixture is a mixture of what?
Answer
Correct Answer:
Different gases
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17. What does N stand for?
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18. How much mass must be on the object for the unit of N to be used?
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19. What is the most common form in which natural gas is stored?
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20. What is LNG stored at?
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21. What creates the airflow in a natural-draft cooling tower?
Answer
Correct Answer:
Density gradients
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22. What property does a turbine need to have its work output increased?
Answer
Correct Answer:
Reheating
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23. What type of expansion process is multi stage?
Answer
Correct Answer:
Multistage
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24. What is the name of the process that requires that the compression process in a compressor be carried out in stages?
Answer
Correct Answer:
Intercooling
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25. What is an example of a heat exchanger called?
Answer
Correct Answer:
Intercooler
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26. What is an intercooler?
Answer
Correct Answer:
Heat exchanger
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27. What is the name given to the device that replaces a heat exchanger in a multistage compression refrigeration system?
Answer
Correct Answer:
Mixing chamber
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28. What is the name of the device that has better heat-transfer characteristics?
Answer
Correct Answer:
A mixing chamber
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29. What is the name of a mixing chamber?
Answer
Correct Answer:
Flash chamber
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30. What is the ratio of the mechanical energy output of a motor to the electrical energy input?
Answer
Correct Answer:
Motor efficiency
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31. What is the name of the diagram used to show a nozzle, a turbine, or a compressor?
Answer
Correct Answer:
Mollier diagram
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32. Who was the inventor of the Mollier diagram?
Answer
Correct Answer:
R. Mollier
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33. What would a mixture be if the mole fraction is the same as the volume and pressure?
Answer
Correct Answer:
Ideal-gas mixture
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34. What is the ratio of the number of moles of one component in a mixture to the total moles of the mixture?
Answer
Correct Answer:
Mole fraction
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35. What is the abbreviation for a gram-mole?
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36. What is the name of the process that specifies the number of moles of each component?
Answer
Correct Answer:
Molar analysis
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37. What do mixing chambers not have to be?
Answer
Correct Answer:
A distinct "chamber
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38. What are mixing chambers sometimes classified as?
Answer
Correct Answer:
Direct-contact heat exchangers
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39. What do microscopic forms of energy have to do with the structure of a system?
Answer
Correct Answer:
The degree of the molecular activity
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40. What are microscopic forms of energy?
Answer
Correct Answer:
Molecular structure of a system and the degree of the molecular activity
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41. What is an example of a SI unit for electric current?
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42. When was the metric system adopted?
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43. What does melting line do?
Answer
Correct Answer:
Separates the solid and liquid regions
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44. What is the name of the line that separates the solid and liquid regions on the phase diagram?
Answer
Correct Answer:
Melting line
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45. What is the unit of pressure equal to 106 Pascal?
Answer
Correct Answer:
Megapascal
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46. What is the unit used to measure pressure?
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47. What is recognized at the system boundary?
Answer
Correct Answer:
Entropy transfer
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48. What is the only form of entropy interaction associated with a fixed mass or closed system?
Answer
Correct Answer:
Heat transfer
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49. What is the definition of mechanical equilibrium?
Answer
Correct Answer:
No change in pressure at any point of the system with time
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50. What is a part of mechanical equilibrium?
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51. What can be used to compare the performances of reciprocating engines of equal size?
Answer
Correct Answer:
Mean effective pressure
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52. Who was the German physician and physicist J. R. Mayer?
Answer
Correct Answer:
1814-1878
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53. What does the Mayer relation show how the difference between the constant-pressure specific heat and constant-volume specific heat is related to?
Answer
Correct Answer:
Temperature
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54. What is the name of the relation named in honor of J. R. Mayer?
Answer
Correct Answer:
Mayer relation
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55. If a system is compressible, what kind of relations are the Maxwell relations?
Answer
Correct Answer:
Equations
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56. What kind of system is described by the Maxwell relations?
Answer
Correct Answer:
Simple compressible
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57. In other words, what are the relations that relate the partial derivatives of properties P, v, T, and s of a simple compressible system?
Answer
Correct Answer:
Maxwell relations
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58. What does the term "maximum inversion temperature" mean?
Answer
Correct Answer:
The temperature at the intersection of the P= 0 line
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59. What is the Mass of a system equal to?
Answer
Correct Answer:
The product of its molar mass M and the mole number N
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60. What is the ratio of the mass of one component in a mixture to the total mass of the mixture?
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61. What is the ratio of mass to total mass of a mixture called?
Answer
Correct Answer:
Mass fraction
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62. What is the mass flow through per unit time?
Answer
Correct Answer:
Flow rate
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63. What is the amount of mass flowing through a cross section per unit time?
Answer
Correct Answer:
Mass flow rate
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64. What type of device is a manometer?
Answer
Correct Answer:
Based on the principle
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65. What is used to measure pressure differences?
Answer
Correct Answer:
Manometer
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Nuclear Engineering MCQs | Topic-wise
