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






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






3. Acute angle






4. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only






5. Steam turbine bearings are usually made of...






6. 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)






7. 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






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






9. 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






10. Force






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






12. Stainless fails due to...






13. The term _____ is used as a measure of the quantity of matter.






14. Ratio of the opposite to the adjacent side of a right- angled triangle






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






16. Mechanical efficiency






17. The act or process of measuring






18. coefficient of expansion






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






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






21. Area of a segment






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






23. The rate at which heat flow through a slab of a material does not depend on...






24. 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






25. 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?






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






27. Factor of safety






28. Micro organisms promote corrosion...






29. Resistance to wear - abrasion and penetration






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






31. A parallelogram with adjacent sides of unequal lengths






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






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






34. 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






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






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






37. Work per power stroke (J)






38. Reflex angle






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






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






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






42. 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






43. 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






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






45. 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






46. Obtuse angle






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






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






49. 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% -






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