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. Copper fails due to...






2. The classes of fastening devices are...






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






4. coefficient of superficial (area) expansion






5. Orthographic projection means...






6. Velocity ratio is...






7. Area of a segment






8. 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% -






9. Any two angles whose sum is 90






10. All sides equal - all angles are equal and opposite sides parallel - divided into 6 ISOSCELES triangles - each angle in an octagon is 135 - A = 4.83s2






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






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






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






14. 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






15. A triangle with two equal sides






16. H2SO4 is the chemical formula for...






17. The amount of heat required to completely melt 25 kg of ice from a temperature of -10






18. When classifying beams - the term simple beam refers to a beam






19. Dangerous because a crack starts slowly and propagate slowly - exceed breaking strength and the metal fails suddenly - stress must be tensile can be produced by an external load or residual stress - condensed moisture and change in temperature






20. A 10 m long steel pipe when heated to increase its temperature by 85






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






22. Ratio of the opposite to the adjacent side of a right- angled triangle






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






24. 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?






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






26. A quadrilateral with no parallel sides






27. The force that is equal in magnitude but opposite in direction to the resultant force is called






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






29. Work per second






30. Of a process or change taking place at constant temperature - PV = C






31. Resists oxidation - high strength at high temperatures - increases hardness and abrasion resistance without increasing brittleness - increases response to heat treatment - increases depth of hardness penetration - at 12% chromium steel with not tarni






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






33. Ability to withstand deformation above elastic limit under compression without failure






34. 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...






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






36. Energy can be...






37. Force(N) x distance(m) or W=Fd - unit of joules - 1KJ = 1000J = 1000Nm = 1KNm - 1MJ = 1000000J = 1000000NM = 1MNm






38. Right angle






39. Compounds classified as salts may have the following characteristics






40. A displacement of 9 m north of point A - and another of 6 m west of point A can be added to give a resultant displacement from point A of...






41. Change in tempereature where no heat in transferred - PV(supercript v) = C






42. coefficient of volumetric expansion

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






44. Resistance to wear - abrasion and penetration






45. Reflex angle






46. The rate at which heat flow through a slab of a material does not depend on...






47. Work per power stroke (J)






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






49. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal






50. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known