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. P & IDs






2. 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...






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






4. Factor of safety






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






6. Stainless fails due to...






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






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






9. 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)






10. Velocity ratio is...






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






12. Pythagoras' Theorem






13. A parallelogram with four equal sides






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






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






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






17. Force






18. 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






19. 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






20. 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






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






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






23. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known






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






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






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






27. Is the amount of heat/energy required to increase or decrease the temperature of any given substance's unit mass 1 degree Celsius






28. coefficient of superficial (area) expansion






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






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






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






32. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal






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






34. Energy can be...






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






36. Work per power stroke (J)






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






38. PVn(super script n) = C






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






40. Compounds classified as salts may have the following characteristics






41. 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






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






43. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke






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






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






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






47. Right angle






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






49. A quadrilateral with two parallel sides






50. A straight line that joins 2 points or circumference