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






2. Any two angles whose sum is 90






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






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






5. A closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it A = piab or A = pi(1/2D)(1/2d) - same as = (pi/4)D/d






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






7. A triangle with no two sides of equal length






8. Micro organisms promote corrosion...






9. coefficient of volumetric expansion

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






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






12. Compounds classified as salts may have the following characteristics






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






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






15. Velocity ratio is...






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






17. 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






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






19. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...






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






21. 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% -






22. 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






23. Force - work done - power - mechanical efficiency






24. 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.






25. 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)






26. The most common material used in making large industrial diesel engine pistons is...






27. Potential energy (Ep)






28. Area of a segment






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






30. Force






31. Orthographic projection means...






32. 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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33. 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...






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






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






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






37. Sine Rule






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






39. A triangle with two equal sides






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






41. PVn(super script n) = C






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






43. Pythagoras' Theorem






44. Whether a material will break under sudden impact or hard blow






45. 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






46. A parallelogram with adjacent sides of unequal lengths






47. 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






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






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






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






Can you answer 50 questions in 15 minutes?



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