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






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






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






4. A quadrilateral with no parallel sides






5. Pythagoras' Theorem






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






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






8. Resistance to wear - abrasion and penetration






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






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






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






12. Cosine rule






13. 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






14. Compounds classified as salts may have the following characteristics






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






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






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






18. 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






19. Acute angle






20. A closed plane figure bounded by straight sides






21. coefficient of volumetric expansion

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






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






24. 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






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






26. Work per second






27. P & IDs






28. 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






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






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






31. 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...






32. Straight angle






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

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34. 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.






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






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






37. 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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38. 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% -






39. PVn(super script n) = C






40. PFDs






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






42. A quadrilateral with two parallel sides






43. Reflex angle






44. The temperature of saturated steam vapor at 980 kPa is...






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






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






47. Any two angles whose sum is 90






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






49. 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






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