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. Mechanical efficiency






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






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






4. Acute angle






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






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






7. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second






8. Reflex angle






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






10. A displacement of 9 m north of point A - and another of 6 m west of point A can be added to give a resultant displacement from point A of...






11. One is the trigonometric value of...






12. 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...






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






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






15. 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






16. Potential energy (Ep)






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






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






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






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






21. A closed plane figure bounded by straight sides






22. 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






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






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






25. In a pipe if no fluid is added or removed - flow must remain constant - due to the product of area and velocity being constant - flow must be the same going in as coming out of pipe






26. A quadrilateral with two parallel sides






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






28. 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?






29. In the equation 0.004 + D = 0.0042 - the value of D is...






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






31. coefficient of expansion






32. Velocity ratio is...






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






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






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






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






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






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






39. Right angle






40. PFDs






41. 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






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






43. Orthographic projection means...






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






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






46. 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






47. Force






48. 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.






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






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