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






2. Resistance to wear - abrasion and penetration






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






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






5. Kinetic energy (Ek)






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






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






8. Energy can be...






9. Protons have a mass number of...






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






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. Compounds classified as salts may have the following characteristics






13. A closed plane figure bounded by straight sides






14. Force - work done - power - mechanical efficiency






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






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






17. PFDs






18. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...






19. 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?






20. Micro organisms promote corrosion...






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






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






23. Reflex angle






24. 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






25. The classes of fastening devices are...






26. Any two angles whose sum is 90






27. A quadrilateral with no parallel sides






28. A triangle with two equal sides






29. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change






30. 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% -






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






32. P & IDs






33. Safe working stress is determined by...






34. One is the trigonometric value of...






35. coefficient of volumetric expansion

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






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






38. 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...






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






40. A quadrilateral with two parallel sides






41. Pythagoras' Theorem






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






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






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






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






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






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






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






49. H2SO4 is the chemical formula for...






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