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






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






3. 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






4. Work per power stroke (J)






5. 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?






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






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






8. 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






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






10. 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% -






11. 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






12. Mechanical efficiency






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






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






15. Force






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






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






18. 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






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






20. A parallelogram with four equal sides






21. coefficient of volumetric expansion

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






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






24. 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






25. The classes of fastening devices are...






26. A triangle with two equal sides






27. Cosine rule






28. Stainless fails due to...






29. One is the trigonometric value of...






30. 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






31. Straight angle






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






33. A 10 m long steel pipe when heated to increase its temperature by 85






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






35. 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.






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






37. 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)






38. Moist hydrogen sulphide environment - hydrogen sulphide must be present - water - even trace amount - high strength steel - steel must be under tensile stress - either applied or residual






39. PFDs






40. A closed plane figure bounded by straight sides






41. 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






42. Reflex angle






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






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






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






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






47. coefficient of superficial (area) expansion






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






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






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