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. Safe working stress is determined by...






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






3. Pythagoras' Theorem






4. A triangle with no two sides of equal length






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






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






7. 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






8. 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






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






10. A gas occupies 8.62 m3 at 1800 kPa and 26






11. 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)






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






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






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






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






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






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






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






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






20. A closed plane figure bounded by straight sides






21. 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






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






23. PVn(super script n) = C






24. Reflex angle






25. The classes of fastening devices are...






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






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






28. Mechanical efficiency






29. H2SO4 is the chemical formula for...






30. Work per second






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






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






33. Any two angles whose sum is 90






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






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






36. 1. In a right angle triangle - the sine of an acute angle is equal to...






37. A quadrilateral with two parallel sides






38. Acute angle






39. Straight angle






40. Force - work done - power - mechanical efficiency






41. Micro organisms promote corrosion...






42. According to Hooke's Law - the stress in an elastic body is directly proportional to the strain if...






43. 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






44. Orthographic projection means...






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






46. coefficient of expansion






47. Copper fails due to...






48. Right angle






49. 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






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