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






2. Orthographic projection means...






3. The act or process of measuring






4. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...






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






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






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






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






9. Area of a segment






10. As the cosine decreases - the...






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






12. 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






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






14. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal






15. Factor of safety






16. 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






17. Stainless fails due to...






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






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






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






21. A quadrilateral with two parallel sides






22. Resistance to wear - abrasion and penetration






23. Copper fails due to...






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






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






26. Protons have a mass number of...






27. 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






28. Force - work done - power - mechanical efficiency






29. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details






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






31. 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






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






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






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






35. The classes of fastening devices are...






36. 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% -






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






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






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






40. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree






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






42. A closed plane figure bounded by straight sides






43. 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...






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






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






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






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






48. 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...






49. Velocity ratio is...






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







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Can you answer 50 questions in 15 minutes?


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