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. The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of 7 would be...






2. Being made of 2 or more substances creating unique characteristics and properties when combine






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






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






5. Orthographic projection means...






6. A triangle with no two sides of equal length






7. Work per second






8. Negative terminal of the rectifier must always be connected to the structure that is being protected






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






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






11. 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% -






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






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






14. A scalar quantity is one which has only magnitude and can be fully described by...






15. A closed plane figure bounded by straight sides






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






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






18. A quadrilateral with two parallel sides






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






20. 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






21. Resistance to wear - abrasion and penetration






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






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






24. Acute angle






25. Obtuse angle






26. 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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27. Kinetic energy (Ek)






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






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






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






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

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32. Work per power stroke (J)






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






34. Compounds classified as salts may have the following characteristics






35. H2SO4 is the chemical formula for...






36. As the cosine decreases - the...






37. 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?






38. Right angle






39. coefficient of superficial (area) expansion






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






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






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






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






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






45. Copper fails due to...






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






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






48. Straight angle






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






50. Malleable cast iron is produced by...