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






2. A parallelogram with adjacent sides of unequal lengths






3. Kinetic energy (Ek)






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






5. PFDs






6. 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...






7. 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% -






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






9. coefficient of volumetric expansion

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






11. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2






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






13. Micro organisms promote corrosion...






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






15. Reflex angle






16. Orthographic projection means...






17. Pythagoras' Theorem






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






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






20. Malleable cast iron is produced by...






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






22. Right angle






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






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






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






26. One is the trigonometric value of...






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






28. Cosine rule






29. 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






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






31. 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?






32. 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






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






34. A body having a gravitational force of 2000 N - is pulled along a horizontal surface at constant speed by a rope that makes an angle of 20






35. 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)






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






38. The force that is equal in magnitude but opposite in direction to the resultant force is called






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






40. coefficient of expansion






41. A triangle with two equal sides






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






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






44. 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






45. As the cosine decreases - the...






46. The act or process of measuring






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






48. Protons have a mass number of...






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






50. 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