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






2. The act or process of measuring






3. Sine Rule






4. Potential energy (Ep)






5. Pythagoras' Theorem






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






7. Force - work done - power - mechanical efficiency






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






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






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






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






12. A triangle with no two sides of equal length






13. Area of a segment






14. The moment of a force about a point is...






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






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






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






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






19. 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






20. The classes of fastening devices are...






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






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






23. 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






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






25. coefficient of volumetric expansion


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






27. 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






28. 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






29. 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






30. Resistance to wear - abrasion and penetration






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






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






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






34. 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






35. A quadrilateral with two parallel sides






36. coefficient of expansion






37. Reflex angle






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






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






40. 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






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






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






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






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






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


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






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






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






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






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