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. Micro organisms promote corrosion...






2. Pythagoras' Theorem






3. A pinch of salt is added to a glass of water. The result is...






4. Mechanical efficiency






5. A parallelogram with adjacent sides of unequal lengths






6. coefficient of volumetric expansion

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7. 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...






8. Safe working stress is determined by...






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






10. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree






11. P & IDs






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






13. If 10 m3 of a gas at a pressure of 20 kPa (gauge) and a temperature of 10






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






15. coefficient of superficial (area) expansion






16. Protons have a mass number of...






17. According to Hooke's Law - the stress in an elastic body is directly proportional to the strain if...






18. The pressure that should be used when calculating power - pressure is not constant throughout a power stroke - decreases as gas/steam expands






19. The term _____ is used as a measure of the quantity of matter.






20. Copper fails due to...






21. The factor of safety is always expressed...






22. The ratio of the density of a substance to the density of a standard substance at the same temperature and pressure - the ratio of the density of the substance to the density of the substance to the density of water






23. Force






24. u = initial velocity (m/s) - v = final velocity (m/s) - t = time (s) - s = distance (m) - a = acceleration (m/s/s) - g = acceleration due to gravity (m/s/s)






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






26. coefficient of expansion






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






28. A triangle with no two sides of equal length






29. The precise measurement of heat flow out of a system for chemical and physical processes






30. 1. In a right angle triangle - the sine of an acute angle is equal to...






31. PV=nRT - Boyle's law and Charle's law combined






32. Straight angle






33. The ability to return to its original shape after an external force has been removed






34. A quadrilateral with no parallel sides






35. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor






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






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






38. Being made of 2 or more substances creating unique characteristics and properties when combine






39. The act or process of measuring






40. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.






41. 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?






42. A scalar quantity is one which has only magnitude and can be fully described by...






43. Work per second






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






45. The classes of fastening devices are...






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






47. Resistance to wear - abrasion and penetration






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






49. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only






50. Reflex angle