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. Work per power stroke (J)






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






3. As the cosine decreases - the...






4. The law that states that for a fixed amount of gas at a constant pressure - the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases






5. PFDs






6. 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






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






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






9. Dangerous because a crack starts slowly and propagate slowly - exceed breaking strength and the metal fails suddenly - stress must be tensile can be produced by an external load or residual stress - condensed moisture and change in temperature






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






11. Copper fails due to...






12. P & IDs






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






14. Straight angle






15. Factor of safety






16. 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)






17. Any two angles whose sum is 90






18. Energy can be...






19. Stainless fails due to...






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






21. The heat required to raise the temperature of water at a pressure of 225 kPa from 0






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

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23. 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






24. 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.






25. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp






26. Orthographic projection means...






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






28. Right angle






29. 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...






30. Malleable cast iron is produced by...






31. Resistance to wear - abrasion and penetration






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






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






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






35. Kinetic energy (Ek)






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






37. Area of a segment






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






39. The pressure that should be used when calculating power - pressure is not constant throughout a power stroke - decreases as gas/steam expands






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






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






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






43. 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






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






45. coefficient of expansion






46. A triangle with no two sides of equal length






47. Mechanical efficiency






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






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






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