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. coefficient of superficial (area) expansion






2. Any two angles whose sum is 90






3. Malleable cast iron is produced by...






4. A triangle with no two sides of equal length






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






6. PVn(super script n) = C






7. 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






8. Force






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






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






11. Acute angle






12. Pythagoras' Theorem






13. 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






14. Work per second






15. 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)






16. The most common material used in making large industrial diesel engine pistons is...






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






18. Kinetic energy (Ek)






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






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






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






22. 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






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

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






25. The classes of fastening devices are...






26. Resistance to wear - abrasion and penetration






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






28. Protons have a mass number of...






29. 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?






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






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






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






33. 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






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






35. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree






36. Potential energy (Ep)






37. One is the trigonometric value of...






38. 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






39. A closed plane figure bounded by straight sides






40. P & IDs






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






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






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






44. Cosine rule






45. Reflex angle






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






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






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






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






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