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. 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






2. Area of a segment






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






4. coefficient of superficial (area) expansion






5. The classes of fastening devices are...






6. Protons have a mass number of...






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






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






9. A parallelogram with adjacent sides of unequal lengths






10. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies






11. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details






12. A triangle with two equal sides






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






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






15. When heat is supplied to a liquid in sufficient quantity to change the liquid to a vapour without changing the temperature - the heat supplied is known as...






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






17. Force - work done - power - mechanical efficiency






18. Reflex angle






19. Obtuse angle






20. A straight line that joins 2 points or circumference






21. Acute angle






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






23. 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.






24. Velocity ratio is...






25. Micro organisms promote corrosion...






26. 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






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






28. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain


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






30. The temperature of saturated steam vapor at 980 kPa is...






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






32. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...






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






34. A quadrilateral with two parallel sides






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






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






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






38. 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?






39. 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






40. 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






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






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






43. A closed plane figure bounded by straight sides






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


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






46. Straight angle






47. PFDs






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






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






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