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






2. Pythagoras' Theorem






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






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






5. A quadrilateral with two parallel sides






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






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






8. Negative terminal of the rectifier must always be connected to the structure that is being protected






9. A quadrilateral with no parallel sides






10. Work per second






11. Malleable cast iron is produced by...






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






13. PVn(super script n) = C






14. Sine Rule






15. P & IDs






16. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...






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






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






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






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






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






22. Factor of safety






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






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






25. Right angle






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






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






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






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






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






31. Velocity ratio is...






32. 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






33. H2SO4 is the chemical formula for...






34. 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






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






36. PFDs






37. A closed plane figure bounded by straight sides






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






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

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40. Obtuse angle






41. 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






42. 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






43. Potential energy (Ep)






44. Kinetic energy (Ek)






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






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






47. coefficient of superficial (area) expansion






48. Micro organisms promote corrosion...






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






50. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation