Test your basic knowledge |

Power Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change






2. Four pieces of iron are heated in a furnace to high temperatures. The one at the highest temperature would appear






3. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp






4. The most common scale in use is the...






5. H2SO4 is the chemical formula for...






6. Mechanical efficiency






7. Means that the sum of the matter leaving the plant equals the sum of the matter entering






8. Kinetic energy (Ek)






9. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second






10. Steam turbine bearings are usually made of...






11. When calculating the ultimate stress of a material - we should






12. Obtuse angle






13. As the cosine decreases - the...






14. Force






15. Resistance to corrosion and oxidation at high temperatures - improves toughness - prevents brittleness at low temperatures - increases strength without affecting toughness - amounts range from 1-4% - high impact resistance at amounts as high as 36% -






16. Work done(J)/time(second) - unit of watts - 1 watt = 1 joule/second






17. The heat required to raise the temperature of water at a pressure of 225 kPa from 0






18. Whether a material will break under sudden impact or hard blow






19. PVn(super script n) = C






20. The act or process of measuring






21. Pre- construction - shows graphically the mechanical design engineer's work - during construction - proper location - reference to all equipment - after construction - training reference anddetails of process - utility and electrical systems






22. A triangle with two equal sides






23. Negative terminal of the rectifier must always be connected to the structure that is being protected






24. P & IDs






25. A quadrilateral with two parallel sides






26. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)






27. Copper fails due to...






28. The most common thread used in North America on fasteners such as bolts - is the...






29. The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of 7 would be...






30. The classes of fastening devices are...






31. A 6 m long cantilever beam carries a concentrated load of 45 kN at its free end. What is the shear force at the wall?






32. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%






33. A quadrilateral with no parallel sides






34. The law that states that for a fixed amount of gas at a constant pressure - the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases






35. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...






36. A parallelogram with four equal sides






37. Is the required to change a unit mass from a gas to liquid or liquid to a gas






38. Potential energy (Ep)






39. Testing metals and nonmetals of low to medium hardness. uses a ball that is pressed into material and basis calculations on the diameters of ball and indentation.






40. For making steal is done in a pear shaped vessel that refines molten iron from a blast furnace and scrap into steel






41. coefficient of volumetric expansion


42. Protons have a mass number of...






43. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details






44. Cosine rule






45. The temperature of saturated steam vapor at 980 kPa is...






46. When heat is supplied to a liquid in sufficient quantity to change the liquid to a vapour without changing the temperature - the heat supplied is known as...






47. Micro organisms promote corrosion...






48. Work per power stroke (J)






49. coefficient of expansion






50. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies