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






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






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






4. Mechanical efficiency






5. 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% -






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






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






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






9. Area of a segment






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






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






12. When the co- efficient of friction increases and the force between two surfaces remains constant - the friction force will






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






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






15. The act or process of measuring






16. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second






17. Velocity ratio is...






18. Means that the sum of the matter leaving the plant equals the sum of the matter entering






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






20. coefficient of volumetric expansion

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






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

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






24. Stainless fails due to...






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






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






27. A closed plane figure bounded by straight sides






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






29. Right angle






30. 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






31. The classes of fastening devices are...






32. As the cosine decreases - the...






33. The most common scale in use is the...






34. Resists oxidation - high strength at high temperatures - increases hardness and abrasion resistance without increasing brittleness - increases response to heat treatment - increases depth of hardness penetration - at 12% chromium steel with not tarni






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






36. Force - work done - power - mechanical efficiency






37. Energy can be...






38. 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...






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






41. 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






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






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






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






45. Malleable cast iron is produced by...






46. Sine Rule






47. 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






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






49. Force






50. Copper fails due to...