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. coefficient of superficial (area) expansion






2. Kinetic energy (Ek)






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






4. Potential energy (Ep)






5. 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






6. 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






7. Work per second






8. Velocity ratio is...






9. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...






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






11. When classifying beams - the term simple beam refers to a beam






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






13. Force - work done - power - mechanical efficiency






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






15. The most common thread used in North America on fasteners such as bolts - is 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. Protons have a mass number of...






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






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

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






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






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






24. A quadrilateral with no parallel sides






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






26. Safe working stress is determined by...






27. Area of a segment






28. A parallelogram with adjacent sides of unequal lengths






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






30. 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






31. The act or process of measuring






32. Any two angles whose sum is 90






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






34. 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






35. 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






36. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree






37. Ability to withstand deformation above elastic limit under compression without failure






38. Copper fails due to...






39. Compounds classified as salts may have the following characteristics






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






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






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






43. 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






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






45. A 1 N weight has a kinetic energy of 1 J when its speed is...






46. When the co- efficient of friction increases and the force between two surfaces remains constant - the friction force will






47. PVn(super script n) = C






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






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






50. 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