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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. 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% -






2. 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






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






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






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






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






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






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






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






10. 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






11. P & IDs






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






13. 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






14. The term _____ is used as a measure of the quantity of matter.






15. Acute angle






16. Obtuse angle






17. Right angle






18. A quadrilateral with two parallel sides






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






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






21. A closed plane figure bounded by straight sides






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






23. Resistance to wear - abrasion and penetration






24. Work per second






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






26. Force






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






28. 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...






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






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






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






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






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






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






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






36. 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






37. Kinetic energy (Ek)






38. Velocity ratio is...






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






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






41. 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)






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






43. The classes of fastening devices are...






44. Factor of safety






45. Reflex angle






46. A quadrilateral with no parallel sides






47. coefficient of volumetric expansion

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48. 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?






49. Straight angle






50. 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






Can you answer 50 questions in 15 minutes?



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