1. What is the name given to the quantity of a vapor given as its enthalpy of vaporization?
Answer
Correct Answer:
Hfg
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2. What is the name of the quantity hfg listed in the saturation tables?
Answer
Correct Answer:
Enthalpy of vaporization
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3. What is the difference between the enthalpy of the products at a specified state and the enthalpy of the reactants at the same state for a complete reaction?
Answer
Correct Answer:
Enthalpy of reaction
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4. What reference state has the enthalpy of formation of all stable elements equal to zero?
Answer
Correct Answer:
25°C
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5. What is the enthalpy of formation of all stable elements?
Answer
Correct Answer:
Zero
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6. What is the state of standard reference for enthalpy of formation of all stable elements?
Answer
Correct Answer:
25°C and 1 atm
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7. An amount of fuel is burned at a specified temperature and pressure, what is the value of enthalpy of combustion?
Answer
Correct Answer:
1 kmol
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8. What is the enthalpy of reaction during a steady-flow combustion process when 1 kmol of fuel is burned?
Answer
Correct Answer:
HC
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9. The enthalpy of formation of a component at a specified state is the sum of what two values?
Answer
Correct Answer:
25°C, 1 atm, and the sensible enthalpy of the component relative to 25°C, 1 atm
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10. The sum of the enthalpy of formation of a component at a specified state is what?
Answer
Correct Answer:
Enthalpy of a chemical component
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11. What is the difference between the enthalpy departure and the enthalpy departure factor?
Answer
Correct Answer:
Entropy departure
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12. Entropy departure is the difference between the entropy of a real gas at a given P and T and the entropy of the gas at an ideal gas state at the same P and T what is the dimensionless form of enthalpy departure?
Answer
Correct Answer:
Enthalpy departure factor
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13. What is the difference between the enthalpy of a real gas and the enthalpy of the gas at an ideal gas state?
Answer
Correct Answer:
Enthalpy departure
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14. What is measured when a gas is cooled?
Answer
Correct Answer:
Enthalpy change
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15. What is enthalpy defined as?
Answer
Correct Answer:
The sum of the internal energy U and the PV product
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16. What is the internal energy?
Answer
Correct Answer:
U
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17. What is the abbreviation for the Roman unit of weight?
Answer
Correct Answer:
Libra
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18. What is the rate of energy transport by mass?
Answer
Correct Answer:
The product of the mass flow rate and the total energy of the flow
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19. What is the performance of refrigerators and air conditioners?
Answer
Correct Answer:
Energy efficiency rating
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20. How many Btu's are removed from the cooled space in an EER?
Answer
Correct Answer:
1
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21. Electical work is done on a system as what?
Answer
Correct Answer:
Electrons in a wire move under the effect of electromotive forces
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22. What do electrons do when electrical work is done on a system?
Answer
Correct Answer:
Move under the effect of electromotive forces
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23. The work on electrical systems is called what?
Answer
Correct Answer:
Electrical work
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24. What converts 100 percent of the electrical energy it consumes into heat?
Answer
Correct Answer:
Resistance heaters
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25. What is the efficiency of a resistance heater that converts all the electrical energy it consumes into heat?
Answer
Correct Answer:
100 percent
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26. What is the term used to describe the ratio of the energy delivered the house by hot water to the energy supplied to the water heater?
Answer
Correct Answer:
Efficiency
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27. What is the ratio of the energy delivered to the house by hot water to the energy supplied to the water heater?
Answer
Correct Answer:
Efficiency of a water heater
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28. What is the definition of efficiency of a cooking appliance?
Answer
Correct Answer:
The ratio of the useful energy transferred to the food to the energy consumed by the appliance
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29. A cooking appliance's efficiency is defined as the ratio of what to the energy consumed by the appliance?
Answer
Correct Answer:
The useful energy transferred to the food
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30. What can be defined as the ratio of the useful energy transferred to the food to the energy consumed by the appliance?
Answer
Correct Answer:
Efficiency
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31. What specifically indicates how well an energy conversion or transfer process is accomplished?
Answer
Correct Answer:
Efficiency
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32. What does the term efficiency indicate?
Answer
Correct Answer:
How well an energy conversion or transfer process is accomplished
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33. What is the kinetic energy per unit mass divided by?
Answer
Correct Answer:
The constant pressure specific heat
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34. In both gasoline and diesel engines, what is another name for constant volume and constant pressure?
Answer
Correct Answer:
Cycle
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35. What's another name for dry-bulb temperature?
Answer
Correct Answer:
Ordinary temperature of atmospheric air
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36. What kind of temperature is dry-bulb?
Answer
Correct Answer:
Ordinary
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37. What is the ordinary temperature of atmospheric air?
Answer
Correct Answer:
Dry-bulb temperature
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38. What is an example of dry air?
Answer
Correct Answer:
Air that contains no water vapour
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39. What is the term for air that contains no water vapor?
Answer
Correct Answer:
Dry air
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40. What is dome?
Answer
Correct Answer:
The saturation states
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41. What is the name of the saturation states underneath the joined liquid and vapour lines?
Answer
Correct Answer:
Dome
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42. When does displacement volume occur?
Answer
Correct Answer:
Between top dead center and bottom dead center
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43. What is the term for the volume displaced by the piston as it moves between top dead center and bottom dead center?
Answer
Correct Answer:
Displacement volume
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44. What parameter is used to express the performance of a nozzle?
Answer
Correct Answer:
Discharge coefficient
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45. What do dimensions of a quantity describe?
Answer
Correct Answer:
Any physical characterizations of a quantity
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46. What is the term for a property that describes a quantity?
Answer
Correct Answer:
Dimensions
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47. All terms in an equation must have what?
Answer
Correct Answer:
The same unit
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48. What is it called when all terms in an equation have the same unit?
Answer
Correct Answer:
Dimensionally homogeneous
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49. What can a diffuser increase pressure of?
Answer
Correct Answer:
Fluid
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50. What is a measure of a diffuser's ability to increase the pressure of the fluid?
Answer
Correct Answer:
Diffuser efficiency
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51. A diffuser increases the pressure of a fluid by decreasing what?
Answer
Correct Answer:
Fluid velocity
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52. What kind of device increases the pressure of a fluid?
Answer
Correct Answer:
Diffuser
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53. What type of engines are ideal for the Diesel cycle?
