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






2. Energy can be...






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






4. H2SO4 is the chemical formula for...






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






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






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






8. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2






9. 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...






10. 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






11. The act or process of measuring






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






13. Any two angles whose sum is 90






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






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






16. 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.






17. Obtuse angle






18. PFDs






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






20. A quadrilateral with no parallel sides






21. coefficient of volumetric expansion

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22. 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






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






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






25. Factor of safety






26. A parallelogram with four equal sides






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






28. Straight angle






29. Work per second






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






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

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32. 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






33. 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






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






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






36. Micro organisms promote corrosion...






37. Potential energy (Ep)






38. Velocity ratio is...






39. Refers to change in the position of the body - relative to some reference point - not concerned with actual distance traveled - a vector quantity with magnitude and direction






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






41. A quadrilateral with two parallel sides






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






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






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






45. One is the trigonometric value of...






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






47. Sine Rule






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






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






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