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. Factor of safety






2. H2SO4 is the chemical formula for...






3. A gas occupies 8.62 m3 at 1800 kPa and 26






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






5. PFDs






6. A parallelogram with adjacent sides of unequal lengths






7. A parallelogram with four equal sides






8. Orthographic projection means...






9. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation






10. PVn(super script n) = C






11. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain

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






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






14. P & IDs






15. A quadrilateral with two parallel sides






16. coefficient of superficial (area) expansion






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






18. The moment of a force about a point is...






19. Is the amount of heat/energy required to increase or decrease the temperature of any given substance's unit mass 1 degree Celsius






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






21. coefficient of expansion






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






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






24. Is a number that appears naturally in some higher- level mathematics is 2.71828 (correct to 5 decimal places)






25. Mechanical efficiency






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






27. coefficient of volumetric expansion

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28. In the equation 0.004 + D = 0.0042 - the value of D is...






29. 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% -






30. A triangle with two equal sides






31. A straight line that joins 2 points or circumference






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






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






34. Micro organisms promote corrosion...






35. Obtuse angle






36. Work per second






37. Cosine rule






38. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke






39. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.

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






41. A body having a gravitational force of 2000 N - is pulled along a horizontal surface at constant speed by a rope that makes an angle of 20






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






43. A 1 N weight has a kinetic energy of 1 J when its speed is...






44. Straight angle






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






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






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






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






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






50. 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...