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






2. 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






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






4. The act or process of measuring






5. The classes of fastening devices are...






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






7. Means that the sum of the matter leaving the plant equals the sum of the matter entering






8. Sine Rule






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






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






11. The moment of a force about a point is...






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






13. 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






14. Factor of safety






15. coefficient of volumetric expansion


16. Resistance to corrosion - improved properties at high and low temperatures - lowers coefficient of expansion






17. Work per power stroke (J)






18. Potential energy (Ep)






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






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






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






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






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






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






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






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






27. When heat is supplied to a liquid in sufficient quantity to change the liquid to a vapour without changing the temperature - the heat supplied is known as...






28. Straight angle






29. Compounds classified as salts may have the following characteristics






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






31. A triangle with no two sides of equal length






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






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






34. PVn(super script n) = C






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






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


37. Velocity ratio is...






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






39. A triangle with two equal sides






40. Expansion of a gas is said to be adiabatic when expansion takes place at...






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






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






43. 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% -






44. One is the trigonometric value of...






45. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain


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






47. A parallelogram with adjacent sides of unequal lengths






48. All sides equal - all angles are equal and opposite sides parallel - divided into 6 ISOSCELES triangles - each angle in an octagon is 135 - A = 4.83s2






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






50. 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