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. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will






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






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






4. A parallelogram with four equal sides






5. Micro organisms promote corrosion...






6. Stainless fails due to...






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






8. Protons have a mass number of...






9. As the cosine decreases - the...






10. The ratio of the weight of an object being moved along a surface and the force that maintains contact between the object and the surface u = tan(thada) - coefficient of friction is equal to the tangent of friction angle






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






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






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






14. Resistance to wear - abrasion and penetration






15. Acute angle






16. Mechanical efficiency






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






18. Velocity ratio is...






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






20. A straight line that joins 2 points or circumference






21. A parallelogram with adjacent sides of unequal lengths






22. 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?






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






24. PFDs






25. Reflex angle






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






27. P & IDs






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






29. Orthographic projection means...






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






31. 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






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






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






34. Pythagoras' Theorem






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






36. A closed plane figure bounded by straight sides






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






38. Resistance to corrosion - improved properties at high and low temperatures - lowers coefficient of expansion






39. Straight angle






40. 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






41. Work per power stroke (J)






42. The classes of fastening devices are...






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






44. 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...






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






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






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






48. In a pipe if no fluid is added or removed - flow must remain constant - due to the product of area and velocity being constant - flow must be the same going in as coming out of pipe






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






50. Sine Rule