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. coefficient of volumetric expansion

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






3. A parallelogram with four equal sides






4. Micro organisms promote corrosion...






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






6. 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






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






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






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






10. 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...






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






12. Straight angle






13. Work per power stroke (J)






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






15. H2SO4 is the chemical formula for...






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






17. The act or process of measuring






18. A quadrilateral with no parallel sides






19. Copper fails due to...






20. The temperature of saturated steam vapor at 980 kPa is...






21. Pythagoras' Theorem






22. 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






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






24. Expansion of a gas is said to be adiabatic when expansion takes place at...






25. The pressure that should be used when calculating power - pressure is not constant throughout a power stroke - decreases as gas/steam expands






26. Moist hydrogen sulphide environment - hydrogen sulphide must be present - water - even trace amount - high strength steel - steel must be under tensile stress - either applied or residual






27. Potential energy (Ep)






28. Any two angles whose sum is 90






29. 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






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






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






32. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.






33. A quadrilateral with two parallel sides






34. As the cosine decreases - the...






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






36. Acute angle






37. Reflex angle






38. Force






39. A parallelogram with adjacent sides of unequal lengths






40. u = initial velocity (m/s) - v = final velocity (m/s) - t = time (s) - s = distance (m) - a = acceleration (m/s/s) - g = acceleration due to gravity (m/s/s)






41. One is the trigonometric value of...






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






43. Stainless fails due to...






44. PVn(super script n) = C






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






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






47. The law that states that for a fixed amount of gas at a constant pressure - the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases






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






49. A straight line that joins 2 points or circumference






50. 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